CN220120660U - Waterproof detection device of building wall for engineering - Google Patents

Waterproof detection device of building wall for engineering Download PDF

Info

Publication number
CN220120660U
CN220120660U CN202321708979.9U CN202321708979U CN220120660U CN 220120660 U CN220120660 U CN 220120660U CN 202321708979 U CN202321708979 U CN 202321708979U CN 220120660 U CN220120660 U CN 220120660U
Authority
CN
China
Prior art keywords
water
wall surface
detection device
fixedly connected
absorbing sponge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321708979.9U
Other languages
Chinese (zh)
Inventor
邓小湖
刘鹏若
程涛
张立斌
邹伟城
林桂军
王轶明
龙万金
蒋酆宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Bangdi Engineering Consulting Co ltd
Original Assignee
Shenzhen Bangdi Engineering Consulting Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Bangdi Engineering Consulting Co ltd filed Critical Shenzhen Bangdi Engineering Consulting Co ltd
Priority to CN202321708979.9U priority Critical patent/CN220120660U/en
Application granted granted Critical
Publication of CN220120660U publication Critical patent/CN220120660U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Examining Or Testing Airtightness (AREA)

Abstract

The utility model relates to the technical field of wall surface waterproof detection, in particular to a building wall surface waterproof detection device for engineering. The water storage tank is installed at the top of casing, and one side fixedly connected with of casing sprays the subassembly, accepts the subassembly and measures the subassembly. The spraying assembly is used for spraying water on the wall to be tested, the bearing assembly is used for bearing the water sprayed by the spraying assembly, and the measuring assembly is used for collecting and visually displaying the water borne by the bearing assembly. The water collected by the measuring assembly is utilized to judge the waterproof performance of the wall surface, so that the error of judging the waterproof performance of the wall surface by experience is reduced. The utility model has the effect of improving the accuracy of wall waterproof performance measurement.

Description

Waterproof detection device of building wall for engineering
Technical Field
The utility model relates to the technical field of wall surface waterproof detection, in particular to a building wall surface waterproof detection device for engineering.
Background
After the construction of the building wall surface is finished, the water resistance of the wall surface is required to be detected, whether the water resistance of the building wall surface is missed or not can be detected through the water resistance detection, and the conditions of imprecise brushing or leakage and the like occur in some places are avoided, so that the use and living quality of a house are guaranteed.
At present, when the waterproof detection is carried out on the wall surface, the engineering supervision usually uses a water spray bottle to spray water to the wall surface, and whether the water on the wall surface is absorbed and diffused by the wall body or the water drop wall hanging occurs is observed. If more water on the wall surface absorbs and diffuses, the water-proof performance of the wall surface is poor, otherwise, if the water on the wall surface has the phenomenon of water drop wall hanging, the water-proof performance of the wall surface is good.
Aiming at the related technology, the water-proof performance of the wall surface is judged by observing the water-proof state of the wall surface only through supervision experience, so that deviation is easy to generate.
Disclosure of Invention
In order to judge the wall surface waterproof performance more accurately, the utility model provides a construction wall surface waterproof detection device for engineering.
The utility model provides a waterproof detection device for a building wall surface for engineering, which adopts the following technical scheme:
a construction wall waterproof detection device for engineering, comprising:
the shell is provided with a water storage tank;
the spray assembly comprises a plurality of spray heads, the spray heads are fixedly connected to the shell, spray pipes are connected to the spray heads and are used for communicating the spray heads with the water storage tank, and spray pumps are fixedly connected to the spray pipes;
the bearing assembly comprises a bearing frame, the bearing frame is arranged on the shell, a water absorbing sponge is arranged on the bearing frame, the water absorbing sponge and the spray header are positioned on the same side, the water absorbing sponge is positioned below the spray header, and the water absorbing sponge is used for being abutted against a wall surface to be detected;
the measuring assembly comprises a collecting piece and a capacity cylinder, wherein the collecting piece is fixedly connected to the shell, the capacity cylinder is fixedly connected to the collecting piece, and the collecting piece is used for collecting moisture absorbed by the water-absorbing sponge and conveying the collected moisture into the capacity cylinder.
Through adopting above-mentioned technical scheme, when needs to detect the construction back building wall after finishing, remove casing to waiting to detect wall department, then will absorb water the sponge butt on waiting to detect the wall, start the spray pump and utilize the shower head to spout a certain amount of water on waiting to detect the wall, utilize collecting piece to absorb water the absorbing water on the sponge and discharge and collect to the capacity section of thick bamboo, utilize the how much of observing capacity section of thick bamboo interior water to judge waiting to detect the wall waterproof performance.
When the water in the capacity cylinder is more, the water on the wall surface is less absorbed and diffused by the wall body, the water-proof performance of the wall surface is better, and conversely, the water-proof performance of the wall surface is poorer. The waterproof performance of the wall surface can be judged more intuitively and accurately through the capacity cylinder.
Optionally, a jacking piece is fixedly connected to the shell, and the top end of the jacking piece is fixedly connected with the bearing frame.
Through adopting above-mentioned technical scheme, utilize the jacking piece to carry out the jacking with accepting the frame for the sponge butt that absorbs water removes on the wall that detects, thereby makes the sponge that absorbs water can be with the whole absorption of moisture on the wall, makes the wall more clean and tidy, also makes the moisture of collecting more simultaneously, has reduced the detection error that the wall built-up drop caused.
Optionally, fixedly connected with extensible member on accepting the frame, the clamp plate is installed to the tip of extensible member, the sponge fixed connection that absorbs water is in on the clamp plate, collect the piece including the butt board, accept the board, the butt board with the equal fixed connection of butt board is in on the casing, the butt board is used for the butt the sponge that absorbs water, so that the moisture that absorbs water and collect in the sponge is discharged, it is located to accept the board the lower extreme of butt board, accept the board be used for with absorb water sponge exhaust moisture transport to capacity section of thick bamboo in.
Through adopting above-mentioned technical scheme, after the sponge absorbs water, utilize the cooperation of jacking spare and extensible member, make the clamp plate compress tightly the sponge that absorbs water on the butt board to extrude the moisture in the sponge that absorbs water. And then the extruded water is conveyed into the capacity cylinder by the bearing plate, so that the waterproof performance of the broken wall surface can be intuitively observed by observing the capacity cylinder.
Optionally, the receiving plate and the water absorbing sponge are all arranged in a V shape, and the capacity cylinder is fixedly connected to the bottommost part of the V shape of the receiving plate.
Through adopting above-mentioned technical scheme, the board that holds and the sponge V style of calligraphy setting that absorbs water is convenient for extrude the sponge absorbing moisture that absorbs water and collect in the capacity section of thick bamboo.
Optionally, a filter screen is arranged at the joint of the bearing plate and the capacity cylinder.
Through adopting above-mentioned technical scheme, the setting of filter screen makes the water impurity that flows into in the volumetric cylinder less.
Optionally, a recovery component is arranged between the capacity cylinder and the water storage tank, and the recovery component is used for conveying the water collected in the capacity cylinder into the water storage tank.
By adopting the technical scheme, the recovery component enables the water collected in the capacity cylinder to be reused.
Optionally, the recovery assembly includes the recovery pipe, the one end of recovery pipe with the bottom intercommunication of capacity section of thick bamboo, the other end with the water storage tank intercommunication, install the recovery pump on the recovery pipe, the recovery pump be used for with moisture in the capacity section of thick bamboo is carried to in the water storage tank.
Through adopting above-mentioned technical scheme, after observing the water line in the volumetric cylinder, the usable recovery pump is carried the water in the volumetric cylinder again to the water storage tank in the reuse through the recovery pipe.
Optionally, the upper cover of the water absorbing sponge is provided with a protective cover.
Through adopting above-mentioned technical scheme, the setting of protection casing has reduced the sponge that absorbs water and has placed the damage that easily receives for a long time, has prolonged the life of sponge that absorbs water.
Optionally, universal wheels are installed at the bottom of the shell.
Through adopting above-mentioned technical scheme, the setting of universal wheel is convenient for the removal of casing.
Optionally, a scale is vertically arranged on the volumetric cylinder.
Through adopting above-mentioned technical scheme, the setting of scale makes to judge more accurate to wall waterproof performance.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. through the cooperation of the shell, the water storage tank, the spraying assembly, the bearing assembly and the measuring assembly, after the spraying assembly sprays water on the wall to be measured, the water which is not absorbed and diffused by the wall is collected and observed by the cooperation of the bearing assembly and the measuring assembly, so that the effect of more accurately judging the waterproof performance of the wall is achieved;
2. the movement of the water absorbing sponge is controlled through the cooperation of the bearing frame, the water absorbing sponge, the pressing plate, the jacking piece and the telescopic piece, and water sprayed on a wall to be detected is fully absorbed, so that the detection result is more accurate, and meanwhile, the wall is cleaner;
3. the water storage tank is communicated with the capacity cylinder through the recovery pipe, and accumulated water of the capacity cylinder is transferred into the water storage tank by the recycling recovery pump, so that the effect of recycling the detected water is achieved.
Drawings
Fig. 1 is a schematic structural view of a waterproof detection device for an engineering building wall surface in an embodiment of the utility model.
Fig. 2 is a schematic diagram of an internal structure of a waterproof detection device for an engineering building wall surface in an embodiment of the utility model.
Reference numerals illustrate:
1. a housing; 11. a universal wheel; 2. a water storage tank; 3. a spray assembly; 31. a spray header; 32. a shower pipe; 33. a spray pump; 4. a receiving assembly; 41. a bearing frame; 42. a jacking member; 43. a telescoping member; 44. a pressing plate; 45. a water absorbing sponge; 46. a protective cover; 5. a measurement assembly; 51. a collection member; 511. an abutting plate; 512. a receiving plate; 513. a leak-proof strip; 52. rong Liangtong; 521. a ruler; 6. a recovery assembly; 61. a recovery pipe; 62. a recovery pump; 7. and (3) a filter screen.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-2.
The embodiment of the utility model discloses a waterproof detection device for a building wall surface for engineering.
Referring to fig. 1, a waterproof detection device for a construction wall surface for engineering comprises a shell 1, wherein a universal wheel 11 is installed at the bottom of the shell 1, and the universal wheel 11 is arranged to facilitate movement of the shell 1. The water storage tank 2 is installed at the top of casing 1, and one side fixedly connected with of casing 1 sprays subassembly 3, accepts subassembly 4 and measurement subassembly 5. The spraying assembly 3 is used for spraying water on the wall to be tested, the receiving assembly 4 is used for receiving the water sprayed by the spraying assembly 3, and the measuring assembly 5 is used for collecting and visually displaying the water received by the receiving assembly 4. The water collected by the measuring assembly 5 is utilized to judge the waterproof performance of the wall surface, so that the error of judging the waterproof performance of the wall surface by experience is reduced, and the accuracy of measuring the waterproof performance of the wall surface is improved.
Referring to fig. 2, the spray assembly 3 includes a spray header 31, the spray header 31 is fixedly connected to the housing 1, a spray pipe 32 is communicated between the spray header 31 and the water storage tank 2, a spray pump 33 is fixedly connected to the spray pipe 32, and water in the water storage tank 2 is sprayed onto a wall to be detected by starting the spray pump 33.
The bearing assembly 4 comprises a bearing frame 41, the bearing frame 41 is vertically and slidably arranged on the shell 1, jacking pieces 42 are arranged on the bottoms of the two sides of the bearing frame 41, and the jacking pieces 42 are fixedly connected to the shell 1. In this embodiment, the lifting member 42 is an air cylinder, and a piston rod of the air cylinder is fixedly connected with the bottom of the receiving frame 41. The supporting frame 41 can move vertically by the lifting action of the lifting member 42.
The telescopic piece 43 is fixedly connected to the bearing frame 41, the telescopic piece 43 is an air cylinder in the embodiment, the pressing plate 44 is fixedly connected to a piston rod of the air cylinder, the water absorbing sponge 45 is fixedly connected to one end, away from the telescopic piece 43, of the pressing plate 44, the water absorbing sponge 45 is arranged in a V shape, the water absorbing sponge 45 and the spray header 31 are located on the same side, and the water absorbing sponge 45 is located below the spray header 31. The upper cover of the water absorbing sponge 45 is provided with a protective cover 46 (combined with fig. 1), and the arrangement of the protective cover 46 reduces the damage to the water absorbing sponge 45 which is easy to be damaged when the water absorbing sponge 45 is placed for a long time, and prolongs the service life of the water absorbing sponge 45.
When the construction wall surface is required to be detected after construction is finished, the shell 1 is moved to the wall surface to be detected, the water absorbing sponge 45 is abutted to the wall surface to be detected by the telescopic piece 43, then the spray pump 33 is started to spray a certain amount of water on the wall surface to be detected by the spray head 31, after a period of time, the jacking piece 42 is started to enable the water absorbing sponge 45 to move on the detection wall, so that water on the detection wall is completely absorbed, then the water absorbed on the water absorbing sponge 45 is discharged and collected by the measuring assembly 5, and the water in the measuring assembly 5 is observed, so that the water-proof performance of the wall surface to be detected is judged.
Utilize jacking piece 42 drive to accept frame 41 and jack-up for the sponge 45 butt that absorbs water removes on the wall of detection, thereby makes the sponge 45 that absorbs water can all absorb the moisture on the wall, makes the wall more clean and tidy, also makes the moisture of collecting more simultaneously, has reduced the detection error that the wall built-up drop caused.
The measuring assembly 5 comprises a collecting member 51 and a capacity barrel 52, in this embodiment, the collecting member 51 comprises an abutting plate 511 and a receiving plate 512, the receiving plates 512 are fixedly connected to the housing 1, the abutting plate 511 is fixedly connected to the receiving plate 512, the abutting plate 511 is used for abutting the water absorbing sponge 45 so that water collected in the water absorbing sponge 45 is discharged, the abutting plate 511 is also arranged in a V shape, the edge of the abutting plate 511 is fixedly connected with a leakage preventing strip 513, and the leakage preventing strip 513 is arranged so that water flowing from the side edges of the compressed water absorbing sponge 45 is reduced.
The bearing plate 512 is located at the lower end of the abutting plate 511, the bearing plate 512 is perpendicular to the abutting plate 511, and the bearing plate 512 is fixedly connected to the edge of the bottom of the abutting plate 511, so that the bearing plate 512 is also in a V-shaped arrangement, the containing cylinder 52 is fixedly connected to the bottommost part of the V-shaped bearing plate 512 and is communicated with the upper surface of the bearing plate 512, and the bearing plate 512 in the V-shaped arrangement is convenient for conveying water discharged by the water absorbing sponge 45 into the containing cylinder 52.
Rong Liangtong 52 is made of transparent material such as glass and transparent plastic, in this embodiment, the capacity cylinder 52 is made of transparent plastic, the side wall of the capacity cylinder 52 is marked with a scale 521, and the water-proof performance of the wall surface can be more conveniently and accurately judged by observing the scale of the scale 521.
After the water absorbing sponge 45 absorbs water, the pressing plate 44 presses the water absorbing sponge 45 against the abutting plate 511 by the cooperation of the jacking piece 42 and the telescopic piece 43, so that the water in the water absorbing sponge 45 is extruded. The extruded water is then conveyed into the capacity cylinder 52 by the receiving plate 512, so that the water-proof performance of the broken wall surface can be visually observed by observing the capacity cylinder 52.
When the water in Rong Liangtong is more, the water on the wall surface is less absorbed and diffused by the wall body, the water-proof performance of the wall surface is better, and conversely, the water-proof performance of the wall surface is poorer. The water-proof performance of the wall surface can be more intuitively and accurately judged by observing the water level lines and the scale marks on the volume cylinder 52.
In an alternative embodiment, a recovery assembly 6 is arranged between the capacity cylinder 52 and the water storage tank 2, and in this embodiment, the recovery assembly 6 comprises a recovery pipe 61, one end of the recovery pipe 61 is communicated with the bottom of the capacity cylinder 52, the other end of the recovery pipe 61 is communicated with the water storage tank 2, and a recovery pump 62 is mounted on the recovery pipe 61, and the recovery pump 62 is used for conveying the moisture in the capacity cylinder 52 into the water storage tank 2.
The connection between the receiving plate 512 and the capacity cylinder 52 is provided with a filter screen 7. The filter screen 7 is arranged to enable water impurities flowing into the volumetric cylinder 52 to be less, and meanwhile, the reused water is cleaner, so that the spray header 31 is not easy to be blocked.
After the water line in the capacity cylinder 52 is observed, the recovery pump 62 is started to convey the water in the capacity cylinder 52 again into the water reservoir 2 through the recovery pipe 61 for reuse.
The arrangement of the recovery assembly 6 not only reduces the waste of water resources, but also enables the waterproof detection device to work for a long time, and reduces the times of filling water resources into the water storage tank 2.
The implementation principle of the waterproof detection device for the engineering building wall surface provided by the embodiment of the utility model is as follows: the water-absorbing sponge 45 can be wetted before the waterproof detection device detects, then the water is squeezed, then the waterproof detection device is pushed to the wall surface to be detected by the universal wheel 11, and the universal wheel 11 is locked by the brake pad of the universal wheel 11. The telescopic piece 43 is started to abut the water absorbing sponge 45 on the wall surface to be detected, and then the spray header 31 is started to spray a fixed amount of water to the wall surface to be detected.
After a period of time, the jacking piece 42 is started to enable the water absorbing sponge 45 to move upwards along the wall surface to be detected, after sprayed water is absorbed, the jacking piece 42 and the telescopic piece 43 are started simultaneously, so that all the water absorbed by the water absorbing sponge 45 is extruded by the pressing plate 44 and the abutting plate 511, at the moment, the extruded water flows into the capacity cylinder 52 along the bearing plate 512, and the water sprayed out is detected to be a certain amount each time, so that the water-proof performance of the wall surface can be intuitively and accurately judged by observing the water level line of the collected water in the capacity cylinder 52 each time.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. Waterproof detection device of building wall for engineering, characterized by comprising:
the water storage tank (2) is arranged on the shell (1);
the spray assembly (3) comprises a plurality of spray heads (31), wherein the spray heads (31) are fixedly connected to the shell (1), spray pipes (32) are connected to the spray heads (31), the spray pipes (32) are used for communicating the spray heads (31) with the water storage tank (2), and spray pumps (33) are fixedly connected to the spray pipes (32);
the bearing assembly (4) comprises a bearing frame (41), the bearing frame (41) is arranged on the shell (1), a water absorbing sponge (45) is arranged on the bearing frame (41), the water absorbing sponge (45) and the spray header (31) are positioned on the same side, the water absorbing sponge (45) is positioned below the spray header (31), and the water absorbing sponge (45) is used for being abutted to a wall surface to be detected;
the measuring assembly (5) comprises a collecting piece (51) and a capacity cylinder (52), wherein the collecting piece (51) is fixedly connected to the shell (1), the capacity cylinder (52) is fixedly connected to the collecting piece (51), and the collecting piece (51) is used for collecting moisture absorbed by the water absorbing sponge (45) and conveying the collected moisture into the capacity cylinder (52).
2. The construction wall surface waterproof detection device for engineering according to claim 1, wherein: the lifting piece (42) is fixedly connected to the shell (1), and the top end of the lifting piece (42) is fixedly connected with the bearing frame (41).
3. The construction wall surface waterproof detection device for engineering according to claim 2, wherein: the water absorbing device is characterized in that a telescopic piece (43) is fixedly connected to the supporting frame (41), a pressing plate (44) is mounted at the end of the telescopic piece (43), the water absorbing sponge (45) is fixedly connected to the pressing plate (44), the collecting piece (51) comprises a supporting plate (511) and a supporting plate (512), the supporting plate (511) and the supporting plate (512) are fixedly connected to the shell (1), the supporting plate (511) is used for being abutted to the water absorbing sponge (45) so that water collected in the water absorbing sponge (45) is discharged, the supporting plate (512) is located at the lower end of the supporting plate (511), and the supporting plate (512) is used for conveying water discharged by the water absorbing sponge (45) into the capacity cylinder (52).
4. A construction wall face waterproof detection device for engineering according to claim 3, wherein: the bearing plate (512) and the water absorbing sponge (45) are arranged in a V shape, and the capacity cylinder (52) is fixedly connected to the bottommost part of the V shape of the bearing plate (512).
5. A construction wall face waterproof detection device for engineering according to claim 3, wherein: a filter screen (7) is arranged at the joint of the bearing plate (512) and the capacity cylinder (52).
6. The construction wall surface waterproof detection device for engineering according to claim 1, wherein: a recovery assembly (6) is arranged between the capacity cylinder (52) and the water storage tank (2), and the recovery assembly (6) is used for conveying the water collected in the capacity cylinder (52) into the water storage tank (2).
7. The construction wall surface waterproof detection device for engineering according to claim 6, wherein: the recovery assembly (6) comprises a recovery pipe (61), one end of the recovery pipe (61) is communicated with the bottom of the capacity cylinder (52), the other end of the recovery pipe is communicated with the water storage tank (2), a recovery pump (62) is mounted on the recovery pipe (61), and the recovery pump (62) is used for conveying moisture in the capacity cylinder (52) into the water storage tank (2).
8. The construction wall surface waterproof detection device for engineering according to claim 1, wherein: the upper cover of the water absorbing sponge (45) is provided with a protective cover (46).
9. The construction wall surface waterproof detection device for engineering according to claim 1, wherein: the bottom of the shell (1) is provided with a universal wheel (11).
10. The construction wall surface waterproof detection device for engineering according to claim 1, wherein: a scale (521) is vertically arranged on the capacity cylinder (52).
CN202321708979.9U 2023-06-30 2023-06-30 Waterproof detection device of building wall for engineering Active CN220120660U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321708979.9U CN220120660U (en) 2023-06-30 2023-06-30 Waterproof detection device of building wall for engineering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321708979.9U CN220120660U (en) 2023-06-30 2023-06-30 Waterproof detection device of building wall for engineering

Publications (1)

Publication Number Publication Date
CN220120660U true CN220120660U (en) 2023-12-01

Family

ID=88915280

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321708979.9U Active CN220120660U (en) 2023-06-30 2023-06-30 Waterproof detection device of building wall for engineering

Country Status (1)

Country Link
CN (1) CN220120660U (en)

Similar Documents

Publication Publication Date Title
CN210322663U (en) Sanitary towel hydroscopicity detection device
CN220120660U (en) Waterproof detection device of building wall for engineering
CN207477457U (en) A kind of ground swab with air-drying function
CN108405389A (en) A kind of solar panel with cleaning device
CN211505267U (en) Glass defect detection equipment capable of being automatically marked
CN116593662B (en) Self-cleaning type water quality detector
CN210376359U (en) Paint solvent resistance detection device
CN212523610U (en) Flue gas desulfurization device for detecting and recycling environmental gas
CN206440484U (en) A kind of material drawing board for pathological section
CN211358042U (en) Electronic pulse dust removal equipment
CN214472562U (en) Building engineering waterproof material detection device
CN212568084U (en) Sampling device for lubricating oil concentration detection
CN213842562U (en) Steel bottle gas tightness detection device
CN213611464U (en) Rotatable experimental equipment draining rack
CN212190483U (en) Cleaning device for liquid accumulator of high performance liquid chromatograph
CN211825816U (en) Portable pH meter
CN210465026U (en) Water source well water production device of limiting quantity
CN207723976U (en) Plate workpiece cutting and clamping device
CN213957308U (en) A atmosphere detection device for building site
CN217403704U (en) Test bed for detecting waterproof performance of electric connector
CN219296613U (en) Automatic feeding and assembling equipment for water meter glass
CN220724166U (en) Sample extraction tube
CN219122120U (en) Portable activated carbon adsorption performance detection device
CN213544107U (en) Detection sampling equipment suitable for hydraulic engineering
CN215857448U (en) Dust device for municipal works environmental protection

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant