CN211209806U - Portable examination recording system - Google Patents
Portable examination recording system Download PDFInfo
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- CN211209806U CN211209806U CN201921568637.5U CN201921568637U CN211209806U CN 211209806 U CN211209806 U CN 211209806U CN 201921568637 U CN201921568637 U CN 201921568637U CN 211209806 U CN211209806 U CN 211209806U
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- telescopic link
- telescopic rod
- recording system
- box
- record appearance
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Abstract
The utility model provides a portable examination recording system, including box, record appearance and telescopic link, the telescopic link rotates the bottom of connecting in the box, and record appearance movable mounting is on the top of telescopic link, and the telescopic link is folding and rotate and to make telescopic link and record appearance hold in the box. The utility model discloses a telescopic link rotates the bottom of connecting in the box, and record appearance movable mounting is on the telescopic link, when experimenting the examination, opens the box, rotates the telescopic link and makes the telescopic link erect and stretch out and make the record appearance reach suitable height, and the orientation of record appearance adjustment self is back, makes the record appearance can detail clear record student experiment examination process. The teacher can grade the experimental examination of the student through the record in the recorder, can repeatedly watch some unclear operation processes, gives an objective and accurate evaluation to the experimental operation of the student. Saves manpower and is convenient to carry.
Description
Technical Field
The utility model relates to an examination recording system especially relates to a portable examination recording system.
Background
The teaching experiment can cultivate the innovation ability and practice ability of students. Practice links are strengthened in teaching, creative thinking of students is fully played, innovation spirit of students is improved, and the method has important significance for engineering talent culture.
At present, some schools list the experiment as one of the examinations, the scoring of the experiment examination generally needs to score the experiment operation besides the scoring of the experiment result, if the teacher directly scores the experiment operation, the experiment result and the like in the experiment examination process, the students cannot be required to operate the experiment part again due to the fact that some reasons possibly do not clearly see some key scoring points, if the students score the experiment part by means of the subjective idea of the teacher, unfairness is caused to the students, and unfairness is also caused to other students. Simultaneously, directly grade at the in-process of experimental examination, need a plurality of teachers grade and record student's experimental operation by side, extravagant manpower, and inefficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable examination record system can carry out complete record to student's experiment operation, guarantees to carry out an accurate mark to student's experiment operation, can use manpower sparingly simultaneously, raises the efficiency, and conveniently carries.
In order to achieve the above object, the utility model provides a portable examination recording system, including box, record appearance and telescopic link, the telescopic link rotate connect in bottom in the box, record appearance movable mounting in on the top of telescopic link, telescopic link flexible and rotation can make telescopic link and record appearance hold in the box.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a telescopic link rotates the bottom of connecting in the box, and record appearance movable mounting is on the telescopic link, when needs experiment examination, opens the box, rotates the telescopic link and erects the telescopic link, stretches out the telescopic link and makes the record appearance on the telescopic link reach suitable height, and the orientation of record appearance adjustment self is back, makes the record appearance can detail clear record student experiment examination process. After the experiment operation record of the student is finished by the recorder, the record in the recorder can be called out and watched, the experiment examination of the student is graded, some unclear operation processes can be repeatedly watched, other teachers can also watch the operation of the student, objective and accurate evaluation is given to the operation of the student, meanwhile, a plurality of teachers are not needed to directly grade the operation of the student in the experiment examination process, and labor is saved. After the experiment examination is finished, the telescopic link retracts, rotates to fall down the telescopic link, so that the telescopic link and the recorder are accommodated in the box body, and the box body is closed. The telescopic rod and the recorder are placed in the box body, so that the portable recorder is convenient to carry and store.
Preferably, the recorder is a camera. This scheme is shot student's experiment operation and is recorded through the camera record, and the record finishes the back and passes back to remote terminal in, makes the teacher grade to student's experiment image, can repeated broadcast to the point of grading of some experiments, guarantees that the teacher can accurately grade student's experiment operation.
Preferably, the utility model discloses a portable examination record system still includes the display screen, the display screen articulate in the box. Still articulated in the box of this scheme have a display screen, can show student's relevant information on the display screen to let the student confirm, after confirming finishing, show relevant experiment examination questions on the display screen, make the student can carry out the answer according to the experiment examination questions, it is convenient, swift, and need not to print the student's of paper version relevant information and experiment examination questions, resources are saved, environmental protection more. And after the experimental examination is finished, because the display screen is hinged in the box body, the direction of the display screen can be adjusted, the telescopic rod, the recorder and the like are placed below the display screen, and the space can be saved.
Preferably, the utility model discloses a portable examination recording system still includes the direction and adjusts the support, the direction adjust the support one end with the top of telescopic link is connected, the direction adjust the support the other end with the record appearance is articulated. This scheme is provided with the direction and adjusts the support, makes four direction swings about the record appearance can up to down to adjust the direction of record appearance better, so that record student's experiment operation better.
Preferably, the direction adjusting support comprises a direction adjusting sleeve and a direction adjusting shaft, the direction adjusting sleeve is rotatably sleeved on the top of the telescopic rod, one end of the direction adjusting shaft is connected with the direction adjusting sleeve, and the other end of the direction adjusting shaft is hinged to the recorder. This scheme passes through the direction and adjusts the cover and can make the record appearance for the telescopic link horizontal hunting, and the direction control axle can make the record appearance upset from top to bottom for the record appearance can be adjusted from top to bottom and control, guarantees that the whole experimentation can be shot clearly to the record appearance.
Preferably, the portable examination recording system further comprises a telescopic rod direction adjusting piece, the telescopic rod direction adjusting piece is installed at the bottom inside the box body, and the bottom of the telescopic rod is connected with the telescopic rod direction adjusting piece. This scheme is connected the bottom and the telescopic link direction regulating part of telescopic link, and the telescopic link can adjust the direction of telescopic link under the effect of telescopic link direction regulating part for the regulation of telescopic link is more nimble.
Preferably, the telescopic rod direction adjusting piece is a spherical hinge.
Preferably, the bottom of the telescopic rod is provided with a threaded hole, and the threaded hole is connected with a bolt on the spherical hinge in a matching manner, so that the telescopic rod is installed on the spherical hinge. This scheme passes through screw hole and bolt cooperation, can make the telescopic link install on the ball pivot to the orientation that changes the telescopic link along with the spheroidal action of ball pivot when need not to use the record appearance to take notes, can also demolish the telescopic link, is convenient for preserve.
Preferably, the utility model discloses a portable examination recording system still includes the installation base, the installation base be the diagonal angle set up in the box, the ball pivot cover is located on the installation base.
Preferably, the utility model discloses a portable examination recording system still includes adjusting bolt, the side of ball pivot is provided with adjusting screw hole, adjusting bolt and adjusting screw hole cooperation the installation base is so that the spheroid of ball pivot is fixed. This scheme is through setting up adjusting bolt to make adjusting bolt and adjusting screw hole cooperation screw up, make the spheroid on the ball pivot fixed, make the telescopic link on the spheroid can fix, can not take place the swing, loosen adjusting bolt after, can rotate the spheroid of ball pivot once more, the angle of adjustment telescopic link, with the angle of adjustment record appearance, make the record appearance can more accurately take notes student's experiment operation.
Drawings
Fig. 1 is a schematic view of the overall structure of the portable examination recording system of the present invention.
Fig. 2 is a side view of the portable examination recording system of the present invention.
Fig. 3 is a schematic structural view of the telescopic rod direction adjusting member of the present invention.
Detailed Description
In order to clearly understand the technical features, objects and effects of the present invention, the detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
Referring to fig. 1, the utility model provides a portable examination recording system 100, including box 101, record appearance 102 and telescopic link 103, telescopic link 103 rotates to be connected on the bottom in box 101, and record appearance 102 movable mounting is on the top of telescopic link 103, and record appearance 102 can be up down four directions of left and right side adjustment orientation. When carrying out the experiment examination, in sending box 101 to the laboratory, open box 101, open the back, rotate telescopic link 103 and make telescopic link 103 erect the back, and stretch out telescopic link 103, so that record appearance 102 on the telescopic link 103 reaches suitable record height, corresponding adjustment is carried out to record appearance 102's orientation, through telescopic link 103 flexible and record appearance 102's direction adjustment, make record appearance 102 can accurately and clearly take notes the operation process of the whole experiment of student, after the record finishes, the image that teacher's accessible record appearance 102 recorded is graded student's experiment, and certain part of experiment can be repeatedly watched in the image, guarantee to carry out an objective grade to this part. After the experiment record is finished, firstly retracting the telescopic rod 103, rotating the telescopic rod 103, accommodating the recorder 102 and the telescopic rod 103 in the box body 101, covering the box body 101, and after covering, intensively placing and storing the box body 101.
The box body 101 comprises a box cover, a handle 1011 is arranged on one side of the box body 101, a lock catch 1012 is further arranged on the same side, the lock catch 1012 is located near two ends of the handle 1011, and after the box cover of the box body 101 is covered, the lock catch 1012 is buckled, so that the recorder 102, the telescopic rod 103 and other objects are prevented from falling out of the box body 101. The handle 1011 of the box 101 is lifted up to store and store the box 101 collectively.
In the present embodiment, the recorders 102 are cameras, and the number of the recorders 102 is 2, wherein one recorder 102 is mainly used for recording the whole experiment process, and the other recorder 102 is mainly used for recording the hand movements of the student, wherein the height of the recorder 102 for recording the whole experiment process is higher than that of the recorder 102 for recording the hand movements of the student. After the two recorders 102 finish recording, and the storage is performed. Finally, whether the operation of the student is correct or not can be comprehensively judged according to the images recorded by the recorder 102 by combining the experimental process and the action of the details of the student, and an accurate and objective score can be given. Of course, the number of the recorders 102 may be adjusted according to actual recording requirements, and the number of the recorders 102 may be 1 or 3, and the like.
Referring to fig. 1 and 2, in order to enable the recorder 102 to be adjusted in all directions so as to more clearly record the experiment process of the student, the portable examination recording system 100 further includes a direction adjusting bracket 104, one end of the direction adjusting bracket 104 is connected to the top of the telescopic rod 103, the other end of the direction adjusting bracket 104 is hinged to the recorder 102, and the recorder 102 can be adjusted in the directions of up, down, left and right through the action of the direction adjusting bracket 104.
More specifically, the direction adjusting bracket 104 includes a direction adjusting sleeve 1041 and a direction adjusting shaft 1042, the direction adjusting sleeve 1041 is sleeved on the top of the telescopic rod 103, one end of the direction adjusting shaft 1042 is connected with the direction adjusting sleeve 1041, and the other end of the direction adjusting shaft 1042 is hinged to the recorder 102, wherein the direction adjusting sleeve 1041 can rotate left and right around the central axis of the telescopic rod 103, so that the recorder 102 can be adjusted in left and right directions along with the movement of the direction adjusting sleeve 1041, and the recorder 102 is hinged to the direction adjusting shaft 1042, so that the recorder 102 can be turned over up and down, and the recording angle of the recorder 102 can be adjusted. The recorder 102 can ensure that the recorder 102 can clearly record the whole experiment process and the actions of the hands of the student through the adjustment of the up-down direction, the left-right direction.
Referring to fig. 1 and 3, in order to better adjust the direction of the telescopic rod 103, the portable examination recording system 100 further includes a telescopic rod direction adjusting member, the telescopic rod direction adjusting member is mounted at the bottom inside the box 101, the bottom of the telescopic rod 103 is connected with the telescopic rod direction adjusting member, and the telescopic rod 103 can move along with the movement of the telescopic rod direction adjusting member.
In this embodiment, the telescopic rod direction adjusting member is a spherical hinge 105, and certainly, other commonly used adjusting members capable of adjusting the direction may also be used, such as by being hinged to an adjusting base, changing the angle of the telescopic rod 103 by rotating, or adopting a structure that the telescopic rod 103 is set to be similar to a direction rod, changing the direction of the telescopic rod 103 by a rocker, or some other common rod direction adjusting devices, which is not described herein again.
Specifically, be provided with the screw hole (not shown in the figure) in the bottom of telescopic link 103, be provided with bolt 1052 on the spheroid 1051 of ball pivot 105, screw hole through telescopic link 103 is connected with the bolt 1052 cooperation of ball pivot 105, can make telescopic link 103 install on ball pivot 105, and under the effect of ball pivot 105, telescopic link 103 can adjust its self direction, so that erect telescopic link 103 or withdraw telescopic link 103 to the box 101 along the length direction of box 101 in, simultaneously, telescopic link 103 can adjust the direction of self 103 along with the action of ball pivot 105, thereby adjust the direction of record appearance 102 to a certain extent, also guarantee that record appearance 102 can shoot student's experimentation and student's hand action more clearly.
More specifically, the portable recording system 100 further includes two mounting bases (not shown), the two mounting bases are diagonally disposed in the box 101, an annular groove is disposed on a side surface of the mounting base, a contact surface between the mounting base and the sphere 1051 of the spherical hinge 105 is an arc surface, the spherical hinge 105 is sleeved on the mounting base, and the telescopic rod 103 is also diagonally disposed in the box 101. In order to ensure that the telescopic rod 103 can be fixed in the direction after the telescopic rod 103 adjusts the rear direction along with the rotation of the spherical hinge 105, the direction of the telescopic rod 103 does not change in the recording process, an adjusting threaded hole is formed in the side surface of the spherical hinge 105, an adjusting bolt 1053 is matched with the adjusting threaded hole, when the adjusting bolt 1053 is screwed, the adjusting bolt 1053 can be screwed into the annular groove of the mounting base in the screwing process, the arc surface of the mounting base abuts against the sphere 1051 of the spherical hinge 105, so that the sphere 1051 on the spherical hinge 105 is fixed, and the telescopic rod 103 can be fixed in a certain direction; when the adjusting bolt 1053 is loosened, the sphere 1051 on the spherical hinge 105 can rotate, and the direction of the telescopic rod 103 is changed, and after the adjustment is completed, the telescopic rod 103 is fixed in the adjusted direction. In this embodiment, the installation bases are diagonally arranged, and of course, the installation bases may also be arranged on the same side or one of the installation bases may be arranged in the middle of the box 101 without affecting the recording, and the number of the installation bases may be adjusted according to the actual number of the recorders 102.
In this embodiment, the ball joint 105 and the telescopic rod 103 are both detachable. After the recording is finished, the spherical hinge 105 and/or the telescopic rod 103 can be selected to be disassembled or not, under the condition of not disassembling, the telescopic rod 103 is retracted, the adjusting bolt 1053 is loosened, the sphere 1051 on the spherical hinge 105 can rotate, the telescopic rod 103 moves along with the sphere 1051 of the spherical hinge 105 and falls down along the length direction of the box body 101, and after the two telescopic rods 103 fall down, the box cover of the box body 101 is covered and uniformly stored; under the condition of disassembly, only the telescopic rod 103 or only the spherical hinge 105 can be disassembled or the two can be disassembled respectively, the disassembled parts can be placed at any position in the box body 101, after the disassembly, the washing and the placement are finished, the box cover of the box body 101 is covered, and the box body 101 is stored in a centralized mode.
Referring to fig. 1 and 2, the portable examination recording system 100 further includes a display screen 106, the display screen 106 is hinged in the case 101, the display screen 106 can display relevant examination information of the student (such as name, admission card number, examination subject, etc.), the student should confirm whether the relevant examination information on the display screen 106 is wrong, and after the relevant examination information is correct and confirmed, the experiment test questions are displayed on the display screen 106, the student performs relevant operations according to the experiment test questions on the display screen 106, directly displays the relevant information of the student and the experiment test questions on the display screen 106, and the relevant information of the student and the experiment test questions do not need to be printed on paper, so that waste of the paper can be reduced, and resources are saved. In this embodiment, the display screen 106 is a touch screen, and the student can directly click on the display screen 106 to confirm the relevant examination information and perform relevant operations on the experimental test questions, and of course, an operation button may also be provided on one side of the display screen 106 to confirm the relevant examination information and perform relevant operations on the experimental test questions. Other types of display screens are also possible.
The display screen 106 is hinged in the box body 101, and the display screen 106 can be rotated to a proper position, so that students can clearly and completely see own relevant examination information and experimental test questions; and when the experimental record is finished and the box body 101 is recovered and stored, if the spherical hinge 105 and the telescopic rod 103 are not disassembled, the position of the display screen 106 is adjusted to enable the recorder 102 on one side to have enough space for putting down, then the recorder 102 is retracted and put down, after the recorder is put down, the position of the display screen 106 is adjusted to enable the display screen 106 to be close to one side of the recorder 102 which is put down, the recorder 102 on the other side to have enough space for putting down, then the recorder 102 on the other side is put down, after the two recorders 102 are all put down, the position of the display screen 106 is adjusted, then the box body 101 is covered, and the box body 101 is recovered and stored uniformly. After the two recorders 102 are put down, the telescopic rod 103 is located below the display screen 106, so that the situation that the display screen 106 is damaged due to the fact that the telescopic rod 103 extrudes the display screen 106 after the box body 101 is covered can be avoided, meanwhile, the recorder 102 cannot be extruded by the display screen 106, and the recorder 102 is also prevented from being damaged due to extrusion.
The portable examination recording system 100 further comprises a terminal computer, the terminal computer can be respectively electrically connected with the recorder 102 and the display screen 106 through wires, the recorder 102 transmits the recorded segments to the terminal computer, and a teacher can directly check the experiment operation video of students through the terminal computer; the examination information related to the students can be displayed on the display screen 106 through the control of the terminal computer, and after the students confirm that no errors exist, the experimental examination questions are displayed on the display screen 106 through the control of the terminal computer; certainly, the terminal computer can also be electrically connected with the recorder 102 and the display screen 106 respectively in a wireless connection mode; the examination information and the experimental test questions related to the student can be stored in the display screen 106 in advance, the experimental operation video recorded by the recorder 102 can be stored through the memory card of the recorder 102, and when the experimental examination of the student needs to be evaluated, the experimental operation video is called out from the memory card. Of course, images recorded by the recorder 102 may be viewed or the display of the display screen 106 may be controlled by other conventional devices.
With reference to fig. 1 to 3, the operation of the portable examination recording system 100 of the present invention is as follows: when an experimental examination is carried out, the box body 101 is conveyed into a laboratory, the box body 101 is opened, if the spherical hinge 105 and the telescopic rod 103 which are placed in the box body 101 are disassembled in the last experimental record, the spherical hinge 105 is firstly sleeved on the mounting base, then the telescopic rod 103 is mounted on the spherical hinge 105, after the mounting is finished, the telescopic rod 103 is adjusted to a proper position under the action of the spherical hinge 105, the telescopic rod 103 is fixed through the adjusting bolt 1053, after the fixing is finished, the telescopic rod 103 is stretched, and after the stretching is finished, the orientation of the recorder 102 is adjusted through the direction adjusting support 104; if the spherical hinge 105 and the telescopic rod 103 which are placed in the box body 101 are not detached in the last test record, the telescopic rod 103 is directly lifted, after the telescopic rod 103 is erected, the telescopic rod 103 is fixed through the adjusting bolt 1053, after the fixing is finished, the telescopic rod 103 is stretched, and after the stretching is finished, the orientation of the recorder 102 is adjusted through the direction adjusting support 104. Ensure that two record appearance 102 can clearly take notes under the condition of the operation near whole experimentation and student's hand respectively, initial adjustment finishes, when the student gets into the laboratory and carries out the experimental examination, then show student's relevant examination information on display screen 106 through remote terminal's control, after the student confirms oneself relevant examination information, show the experiment examination question on display screen 106, the student carries out relevant experimental operation according to the experiment examination question, whole process then records through two record appearance 102, after the student examination finishes, two record appearance 102 with the image of record carry to in the remote terminal, and save. After the examination is finished, the telescopic rod 103 is retracted, the position of the display screen 106 is adjusted, the telescopic rod 103 can be directly fallen down or the telescopic rod 103 and/or the spherical hinge 105 can be detached, and after the spherical hinge 105, the telescopic rod 103 and the display screen 106 in the box body 101 are processed, the box body 101 is covered, and all the box bodies 101 are uniformly recovered and stored. The teacher can open the experimental images of the students on the remote terminal, and grade the experimental operations of the students, and in unclear places, the teacher can repeatedly check the videos, and make objective and fair grades on the corresponding operations of the students from different angles by combining the images of the two recorders 102. And to some outstanding experimental operations, can also show the student as the teaching material with relevant image to improve the teaching effect. For some common errors of experiments, the related images can also be displayed as teaching materials.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereto. Within the scope of the concept of the present invention, corresponding changes can be made reasonably. Therefore, the protection scope of the present invention should be subject to the claims.
Claims (10)
1. The utility model provides a portable examination recording system, its characterized in that includes box, record appearance and telescopic link, the telescopic link rotate connect in bottom in the box, record appearance movable mounting in on the top of telescopic link, telescopic link expansion and contraction and rotation can make telescopic link and record appearance hold in the box.
2. The portable test recording system of claim 1, wherein the recorder is a camera.
3. The portable examination recording system of claim 1, further comprising a display screen hingedly attached within the housing.
4. The portable examination recording system of claim 1, further comprising a direction adjustment bracket, one end of the direction adjustment bracket being connected to the top of the telescopic rod, the other end of the direction adjustment bracket being hinged to the recorder.
5. The portable examination recording system according to claim 4, wherein the direction adjusting bracket includes a direction adjusting sleeve and a direction adjusting shaft, the direction adjusting sleeve is rotatably sleeved on the top of the telescopic rod, one end of the direction adjusting shaft is connected with the direction adjusting sleeve, and the other end of the direction adjusting shaft is hinged to the recorder.
6. The portable examination recording system according to claim 1, further comprising a telescopic rod direction adjusting member installed at a bottom portion in the case, wherein the bottom portion of the telescopic rod is connected to the telescopic rod direction adjusting member.
7. The portable examination recording system of claim 6, wherein the telescoping rod direction adjustment member is a ball joint.
8. The portable examination recording system according to claim 7, wherein the telescopic rod is provided with a threaded hole at a bottom thereof, and the threaded hole is engaged with a bolt on the ball joint so that the telescopic rod is mounted on the ball joint.
9. The portable examination recording system of claim 7, further comprising a mounting base, wherein the mounting base is diagonally disposed within the housing, and the ball hinge is disposed on the mounting base.
10. The portable examination recording system according to claim 9, further comprising an adjusting bolt, wherein a side surface of the ball hinge is provided with an adjusting screw hole, and the adjusting bolt and the adjusting screw hole are engaged with the mounting base to fix a ball body of the ball hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921568637.5U CN211209806U (en) | 2019-09-19 | 2019-09-19 | Portable examination recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921568637.5U CN211209806U (en) | 2019-09-19 | 2019-09-19 | Portable examination recording system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211209806U true CN211209806U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921568637.5U Active CN211209806U (en) | 2019-09-19 | 2019-09-19 | Portable examination recording system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211209806U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824897A (en) * | 2021-11-24 | 2021-12-21 | 广州威惠教学设备有限公司 | Double-image-acquisition safety video recording equipment for experimental examination |
| CN113965709A (en) * | 2021-11-24 | 2022-01-21 | 广州威惠教学设备有限公司 | Experiment examination video recording equipment with double image acquisition and rapid storage functions |
-
2019
- 2019-09-19 CN CN201921568637.5U patent/CN211209806U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824897A (en) * | 2021-11-24 | 2021-12-21 | 广州威惠教学设备有限公司 | Double-image-acquisition safety video recording equipment for experimental examination |
| CN113965709A (en) * | 2021-11-24 | 2022-01-21 | 广州威惠教学设备有限公司 | Experiment examination video recording equipment with double image acquisition and rapid storage functions |
| CN113824897B (en) * | 2021-11-24 | 2022-02-25 | 广州威惠教学设备有限公司 | Double-image-acquisition safety video recording equipment for experimental examination |
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Denomination of utility model: Portable examination record system Effective date of registration: 20200928 Granted publication date: 20200807 Pledgee: Dongguan branch of Bank of Dongguan Co.,Ltd. Pledgor: GUANGDONG G.S.T SCIENCE & EDUCATION EQUIPMENT Co.,Ltd. Registration number: Y2020980006559 |