CN219050635U - Heterojunction battery production is with electrically conductive silver thick liquid preparation facilities - Google Patents
Heterojunction battery production is with electrically conductive silver thick liquid preparation facilities Download PDFInfo
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- CN219050635U CN219050635U CN202223451667.2U CN202223451667U CN219050635U CN 219050635 U CN219050635 U CN 219050635U CN 202223451667 U CN202223451667 U CN 202223451667U CN 219050635 U CN219050635 U CN 219050635U
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Abstract
The utility model provides a conductive silver paste preparation device for heterojunction battery production, which comprises: the filter cylinder is movably arranged on the rotary table and is inserted into the charging barrel; the filter piece is arranged at the bottom end of the filter cylinder; a sealing member which is rotatably provided inside the filter cartridge and seals the filter member; the driving mechanism is used for driving the sealing element to rotate, and the positioning mechanism is arranged on the turntable and used for positioning the charging barrel; through setting up detachable and straining a section of thick bamboo in the feed cylinder, and straining the bottom of a section of thick bamboo and can seal and open, straining a section of thick bamboo bottom and seal the time, conducting silver thick liquid carries out centrifugal stirring in straining a section of thick bamboo, straining a section of thick bamboo bottom and open the back, conducting silver thick liquid after the stirring gets into in the feed cylinder through the filtration of filter element and collects, has realized under the condition that does not shut down, stirs conducting silver thick liquid, filters and collect the integral type function respectively, has reduced use cost, has improved work efficiency, simple structure, convenient to use.
Description
Technical Field
The utility model relates to the technical field of conductive silver paste stirring, in particular to a device for preparing conductive silver paste for heterojunction battery production.
Background
In the production of heterojunction photovoltaic cells, conductive silver paste is a key raw material, and is used as a metallized electrode to directly influence the photoelectric conversion efficiency of the cells and the output power of photovoltaic modules.
Chinese patent CN 211329161U discloses an automatic stirring device for silver paste in silk screen procedure for electric power equipment, which comprises a centrifugal high-speed silver paste stirrer, a revolution disc, a self-rotating disc, a holding cylinder and a threaded ring; the top of the rotating disc is vertically and fixedly welded with a containing cylinder, the containing cylinder penetrates through the middle of the inner cavity of the threaded ring, a round sliding groove is formed in the bottom of the threaded ring, steel sheet holes are vertically and fixedly formed in the wall of the containing cylinder, and sliding grooves are symmetrically and vertically formed in the containing cylinders on the front side and the rear side of the inner cavity of the steel sheet holes. Compared with the traditional fixing mode of the silver paste barrel, the device can clamp the silver paste barrel tightly through four groups of elastic steel sheets in the actual use process, and the silver paste barrel can be held in the middle of the inner cavity of the holding barrel by bending deformation of the four groups of elastic steel sheets at the same time, so that vibration caused by the fact that the silver paste barrel cannot coaxially and automatically rotate with the rotating disc can be effectively avoided, and further the stirring effect of the off-line high-speed silver paste stirrer on silver paste is improved.
But this technical scheme still has some problems, the stirring process adopts the setting of regularly stirring more, receive the influence of factors such as conductive silver thick liquid self ingredient, the phenomenon of stirring inhomogeneous can appear in conductive silver thick liquid after regularly stirring sometimes, its inside has the granule of great volume, need filter conductive silver thick liquid, just can obtain the thick liquid that the homogeneity is better, above-mentioned technical scheme does not possess and carries out filterable function to conductive silver thick liquid, in actual production, also in most after stirring work, take out conductive silver thick liquid from stationary mixer and put into filtration equipment and filter, stirring and filtration work need use two sets of equipment, and just can filter after the mixer is out of order, work efficiency is low, consequently, it is necessary to improve the agitating unit who prepares conductive silver thick liquid.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, and provides a conductive silver paste preparation device for heterojunction battery production, which is characterized in that a detachable filter cylinder is arranged in a charging barrel, a filter element at the bottom of the filter cylinder is matched with an upper sealing element to seal and open, and the functions of stirring, filtering and respectively collecting the conductive silver paste are simultaneously completed in the rotating process of a rotary table, so that the working efficiency is improved, and the problems that the stirring work and the filtering work are separately carried out after the shutdown in the preparation process of the conductive silver paste, and the working efficiency is low are solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a heterojunction battery production is with electrically conductive silver thick liquid preparation facilities, includes the stirring organism, be equipped with carousel and feed cylinder in the stirring organism, the feed cylinder slope is established on the carousel, still include:
the filter cylinder is movably arranged on the rotary table and is inserted into the charging barrel;
the filter piece is arranged at the bottom end of the filter cylinder;
a sealing member which is rotatably provided inside the filter cartridge and seals the filter member;
drive mechanism for driving the seal member to rotate, and
and the positioning mechanism is arranged on the turntable and used for positioning the charging barrel.
Specifically, in the initial state, the filter cartridge is kept relatively fixed with the feed cylinder under the action of the positioning mechanism, and the sealing element seals the filter element, so that the bottom of the filter cartridge is kept sealed.
When the conductive silver paste is stirred and filtered, pouring the conductive silver paste into the filter cartridge, then starting the turntable to rotate, and driving the filter cartridge and the charging barrel to rotate by the turntable to centrifugally stir the conductive silver paste; after the set stirring time is reached, starting the sealing element to rotate, so that the sealing element is staggered with the filtering element, the conductive silver paste in the filter cylinder can pass through the filtering element to enter the charging barrel, and particles with larger volume are blocked in the filter cylinder; after the rotary table stops rotating, the filter cylinder and the charging barrel are taken out in sequence, and the uniformly stirred conductive silver paste and large-volume particles are respectively collected in the charging barrel and the filter cylinder, so that the conductive silver paste and the large-volume particles are conveniently treated respectively; therefore, the stirring and filtering functions of the conductive silver paste are realized under the condition of no shutdown, the working efficiency is improved, the structure is simple, and the use is convenient.
Preferably, the filter cartridge is in sealing fit with the cartridge, and the height of the interior of the cartridge below the filter is greater than the height of the interior of the filter above the filter.
Specifically, the filter cylinder is in sealing fit with the charging barrel, so that conductive silver paste in the charging barrel is prevented from flowing out through a gap between the filter cylinder and the charging barrel; after the filter cartridge is inserted into the charging barrel, the space below the filter element in the charging barrel can receive the conductive silver paste in an amount larger than the conductive silver paste in the filter cartridge, so that the conductive silver paste in the filter cartridge can flow into the charging barrel through the filter element.
As still another preferred aspect, the filter includes:
an arc plate arranged in the filter cylinder, wherein the arc plate is in a hollow hemispherical shape; and
and the filter holes are arranged at the bottom of the arc-shaped plate.
Specifically, the arc plate seals the entire inner wall ring side of the filter cartridge.
Preferably, the sealing element is arc-shaped, the sealing element and the arc-shaped plate are positioned on the same spherical center, and the sealing element is in sealing fit with the arc-shaped plate.
Specifically, the seal member may rotate against the inner wall of the arcuate plate, completely blocking the filter aperture when the seal member is in the bottom, thereby sealing the bottom end of the filter cartridge with the arcuate plate.
As yet another preferred aspect, the width of the seal is smaller than the inner diameter of the filter cartridge, and the distribution range of the filter holes is smaller than the size of the seal.
Specifically, the sealing element is staggered with the filtering holes after rotating upwards, and because the width of the sealing element is smaller than the inner diameter of the filtering cylinder, a space is reserved between the sealing element after rotating and the inner wall of the filtering cylinder, the filtering cylinder cannot be closed, and conductive silver paste in the filtering cylinder can flow through the filtering holes conveniently.
Preferably, the driving mechanism includes:
a rotating shaft arranged on the sealing element and extending to the outer side of the filter cylinder; and
the motor device is arranged at the outer side of the filter cylinder and connected with the rotating shaft;
the spherical center of the sealing element is positioned on the axis of the rotating shaft;
the rotating shaft and the motor device are both positioned on the outer side of the charging barrel.
Specifically, a sealing gasket is arranged at the joint of the rotating shaft and the filter cylinder.
As still another preferred aspect, the driving mechanism further includes:
the support disc is arranged on the turntable; and
a chute for positioning the motor device is arranged on the supporting disc;
the motor device is arranged below the filter cylinder, the top of the chute is in an opening shape, and the chute is consistent with the inclination angle of the filter cylinder.
Specifically, the spout on the supporting disk plays the effect of supporting and location simultaneously to motor arrangement, and the in-process of cartridge insertion feed cylinder is inside, and motor arrangement inserts the spout simultaneously to fix the cartridge, make the supporting disk can be stable support motor arrangement and cartridge, with the decurrent pulling force that reduces motor arrangement to the pivot production, simultaneously, avoided leading to motor arrangement and feed cylinder to produce the circumstances of damaging with colliding with because of straining the section of thick bamboo in the feed cylinder sliding.
Preferably, the positioning mechanism includes:
the annular plate is arranged on the outer side of the filter cylinder; and
and the clamping jaw assembly is movably arranged on the turntable and used for clamping the annular plate.
Specifically, after the filter cartridge is inserted into the charging barrel, the clamping jaw assembly clamps the annular plate, so that the filter cartridge can be fixed, the filter cartridge is prevented from sliding, and the assembly stability of the filter cartridge and the charging barrel is ensured.
As a further preference, the jaw assembly comprises two rotatable jaws which open to a space greater than the outer diameter of the barrel.
Specifically, with this arrangement, after the two clamping plates are rotated open. The cartridge and cartridge may be removed from the turntable.
Preferably, the top end of the filter cartridge is provided with a detachable cartridge cover.
Specifically, after the conductive silver paste is poured into the filter cylinder, a cylinder cover is covered, so that the conductive silver paste is prevented from being polluted by the external environment.
The utility model has the beneficial effects that:
(1) According to the utility model, the detachable filter cylinder is arranged in the charging cylinder, the bottom of the filter cylinder can be sealed and opened, when the bottom of the filter cylinder is sealed, the conductive silver paste is centrifugally stirred in the filter cylinder, after the bottom of the filter cylinder is opened, the stirred conductive silver paste enters the charging cylinder for collection through the filtration of the filter element, so that the integrated functions of stirring, filtering and respectively collecting the conductive silver paste under the condition of no shutdown are realized, the trouble of using two sets of equipment for stirring and filtering respectively is omitted, the use cost is reduced, the working efficiency is improved, the structure is simple, and the use is convenient.
(2) According to the utility model, the supporting disc is arranged on the rotary disc to support and position the motor device, so that the assembly stability of the filter cartridge and the charging barrel in the stirring and filtering process is improved, and meanwhile, the stably-installed motor device can better drive the sealing element to rotate, and the smooth opening and closing of the bottom of the filter cartridge is ensured.
(3) According to the utility model, the filter cylinder and the positioning mechanism are arranged on the turntable to stir and filter the conductive silver paste, and the installation of the filter cylinder does not conflict with the feed cylinder, so that the scheme can be used after the conventional centrifugal stirring filter is modified, an integral stirrer device is not required to be replaced, the filter cylinder can be reused after being taken out and cleaned, and the use cost is reduced.
In conclusion, the utility model has the advantages of simultaneously stirring and filtering the conductive silver paste, no need of shutdown, high working efficiency, simple structure, low use cost and the like.
Drawings
FIG. 1 is a perspective view of the overall structure of the present utility model;
FIG. 2 is a perspective view of a rotary disc, cartridge and filter cartridge of the present utility model;
FIG. 3 is a semi-sectional view of the rotary disc, cartridge and filter cartridge of the present utility model;
FIG. 4 is a schematic view of a cartridge and cartridge of the present utility model;
fig. 5 is a perspective view of the support plate of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Example 1
As shown in fig. 1-4, this embodiment provides a conductive silver paste preparation device for heterojunction battery production, including stirring organism 1, be equipped with carousel 2 and feed cylinder 3 in the stirring organism 1, the feed cylinder 3 slope is established on the carousel 2, still include:
a filter cartridge 4 movably provided on the rotary table 2 and inserted into the cartridge 3;
a filter element 5 arranged at the bottom end of the filter cartridge 4;
a sealing member 6 rotatably provided inside the filter cartridge 4 and closing the filter 5;
a driving mechanism 7 for driving the sealing member 6 to rotate, and
and a positioning mechanism 8 arranged on the turntable 2 for positioning the charging barrel 3.
Specifically, in the initial state, the filter cartridge 4 is kept relatively fixed with the cartridge 3 under the action of the positioning mechanism 8, and the sealing member 6 seals the filter member 5, so that the bottom of the filter cartridge 4 is kept sealed.
When the conductive silver paste is stirred and filtered, the conductive silver paste is poured into the filter cylinder 4, then the turntable 2 is started to rotate, the turntable 2 drives the filter cylinder 4 and the feed cylinder 3 to rotate, and the conductive silver paste is centrifugally stirred; after the set stirring time is reached, the sealing element 6 is started to rotate, so that the sealing element 6 is staggered with the filtering element 5, the conductive silver paste in the filter cartridge 4 can pass through the filtering element 5 to enter the charging barrel 3, and particles with larger volume are blocked in the filter cartridge 4; after the work is finished, the rotary table 2 stops rotating, the filter cylinder 4 and the feed cylinder 3 are taken out in sequence, and the uniformly stirred conductive silver paste and large-volume particles are respectively collected in the feed cylinder 3 and the filter cylinder 4, so that the respective treatment is convenient; therefore, the stirring and filtering functions of the conductive silver paste are realized under the condition of no shutdown, the working efficiency is improved, the structure is simple, and the use is convenient.
Through setting up and straining a section of thick bamboo 4 and positioning mechanism 8 on carousel 2 and stir and filter electrically conductive silver thick liquid, strain the installation of section of thick bamboo 4 and feed cylinder 3 do not conflict, consequently, this scheme accessible is reformed transform on the centrifugal stirring filter of now and is used, need not to change holistic mixer device, and strain a section of thick bamboo 4 and can take out and wash back used repeatedly, reduced use cost.
As shown in fig. 3, further, the cartridge 4 is in sealing engagement with the cartridge 3, and the height of the interior of the cartridge 3 below the filter 5 is greater than the height of the interior of the cartridge 4 above the filter 5.
Specifically, by arranging the filter cartridge 4 and the feed cylinder 3 to be in sealing fit, the conductive silver paste in the feed cylinder 3 is prevented from flowing out through a gap between the filter cartridge 4 and the feed cylinder 3; after the filter cartridge 4 is inserted into the cylinder 3, the space below the filter element 5 in the cylinder 3 can receive more conductive silver paste than the conductive silver paste in the filter cartridge 4, so as to ensure that the conductive silver paste in the filter cartridge 4 can flow into the cylinder 3 through the filter element 5.
As shown in fig. 4, further, the filter 5 includes:
an arc plate 51 provided inside the filter cartridge 4, the arc plate 51 having a hollow hemispherical shape; and
and a filtering hole 52 arranged at the bottom of the arc plate 51.
Specifically, the arc plate 51 is fixedly arranged on the inner wall of the filter cartridge 4 and seals the ring side of the inner wall of the filter cartridge 4; of course, the arcuate plate 51 may be removably disposed within the cartridge 4.
As shown in fig. 3, further, the sealing member 6 is arc-shaped, the sealing member 6 and the arc-shaped plate 51 are located on the same sphere center, and the sealing member 6 and the arc-shaped plate 51 are in sealing fit.
In particular, the seal 6 can rotate against the inner wall of the arcuate plate 51, completely blocking the filtering holes 52 when the seal 6 is at the bottom, thus blocking the bottom end of the cartridge 4 together with the arcuate plate 51.
As shown in fig. 4, further, the width of the sealing member 6 is smaller than the inner diameter of the filter cartridge 4, and the distribution range of the filter holes 52 is smaller than the size of the sealing member 6.
Specifically, after the sealing member 6 rotates upwards, the sealing member 6 is staggered with the filter holes 52, and because the width of the sealing member 6 is smaller than the inner diameter of the filter cartridge 4, a space is reserved between the sealing member 6 after rotation and the inner wall of the filter cartridge 4, so that the filter cartridge 4 cannot be closed, and conductive silver paste in the filter cartridge 4 can flow through the filter holes 52 conveniently.
As shown in fig. 2, further, the driving mechanism 7 includes:
a rotation shaft 71 provided on the seal 6 and extending to the outside of the filter cartridge 4; and
a motor device 72 connected to the rotation shaft 71 and provided outside the filter cartridge 4;
the sphere center of the sealing element 6 is positioned on the axis of the rotating shaft 71;
the shaft 71 and the motor means 72 are both located outside the cartridge 3.
Specifically, a sealing gasket is arranged at the joint of the rotating shaft 71 and the filter cartridge 4, and the motor device 72 is started to drive the rotating shaft 71 and the sealing member 6 to rotate, so that the bottom opening and closing state of the filter cartridge 4 is adjusted.
As shown in fig. 5, further, the driving mechanism 7 further includes:
a support plate 73 provided on the turntable 2; and
a chute 74 provided on the support plate 73 for positioning the motor device 72;
the motor device 72 is disposed below the filter cartridge 4, the top of the chute 74 is open, and the chute 74 is consistent with the inclination angle of the filter cartridge 4.
Specifically, the chute 74 on the supporting plate 73 plays a role in supporting and positioning the motor device 72 at the same time, and the motor device 72 is inserted into the chute 74 at the same time in the process of inserting the filter cartridge 4 into the charging barrel 3, so that the filter cartridge 4 is fixed, the supporting plate 73 can stably support the motor device 72 and the filter cartridge 4, downward pulling force generated by the motor device 72 to the rotating shaft 71 is reduced, and meanwhile, the situation that the motor device 72 and the charging barrel 3 are damaged due to collision caused by sliding of the filter cartridge 4 in the charging barrel 3 is avoided.
It should be noted that, a device for guiding and positioning the filter cartridge 4 may be additionally provided on the turntable 2, so as to further enhance the stability of the filter cartridge 4 after being assembled with the cartridge 3.
As shown in fig. 2, further, the positioning mechanism 8 includes:
a ring plate 81 provided outside the filter cartridge 4; and
a clamping jaw assembly 82 movably arranged on the turntable 2 and used for clamping the annular plate 81.
Specifically, after the filter cartridge 4 is inserted into the cartridge 3, the clamping jaw assembly 82 clamps the annular plate 81, so that the filter cartridge 4 can be fixed, the filter cartridge 4 is prevented from sliding, and the assembly stability of the filter cartridge 4 and the cartridge 3 is ensured.
As shown in fig. 4, further, the jaw assembly 82 includes two rotatable clamping plates 821, and the space between the two clamping plates 821 after being opened is larger than the outer diameter of the cartridge 3.
Specifically, with this arrangement, after the two clamp plates 821 are rotated open. The cartridge 4 and cartridge 3 may be removed from the turntable 2.
The clamping jaw assembly 82 is provided with a fastening device for fixing the folded clamping plate 821, and the fastening device is preferably but not limited to a structure such as a bolt.
Example two
As shown in fig. 2, wherein the same or corresponding parts as those in the first embodiment are given the same reference numerals as those in the first embodiment, only the points of distinction from the first embodiment will be described below for the sake of brevity. The second embodiment is different from the first embodiment in that:
in this embodiment, a removable cap 41 is provided on the top of the filter cartridge 4.
Specifically, after the conductive silver paste is poured into the filter cartridge 4, the cartridge cover 41 is covered, so that the conductive silver paste is prevented from being polluted by the external environment.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a heterojunction battery production is with electrically conductive silver thick liquid preparation facilities, includes the stirring organism, be equipped with carousel and feed cylinder in the stirring organism, the feed cylinder slope is established on the carousel, its characterized in that still includes:
the filter cylinder is movably arranged on the rotary table and is inserted into the charging barrel;
the filter piece is arranged at the bottom end of the filter cylinder;
a sealing member which is rotatably provided inside the filter cartridge and seals the filter member;
drive mechanism for driving the seal member to rotate, and
and the positioning mechanism is arranged on the turntable and used for positioning the charging barrel.
2. The device for preparing conductive silver paste for heterojunction cell production according to claim 1, wherein,
the filter cylinder is in sealing fit with the charging barrel, and the height of the inside of the charging barrel, which is positioned below the filter element, is larger than the height of the inside of the filter cylinder, which is positioned above the filter element.
3. The device for preparing conductive silver paste for heterojunction cell production according to claim 1, wherein,
the filter element comprises:
an arc plate arranged in the filter cylinder, wherein the arc plate is in a hollow hemispherical shape; and
and the filter holes are arranged at the bottom of the arc-shaped plate.
4. The device for preparing conductive silver paste for heterojunction cell production according to claim 3, wherein,
the sealing element is arc-shaped, the sealing element and the arc-shaped plate are positioned on the same spherical center, and the sealing element is in sealing fit with the arc-shaped plate.
5. The device for preparing conductive silver paste for heterojunction cell production according to claim 3, wherein,
the width of the sealing piece is smaller than the inner diameter of the filter cylinder, and the distribution range of the filter holes is smaller than the size of the sealing piece.
6. The device for preparing conductive silver paste for heterojunction cell production according to claim 1, wherein,
the driving mechanism includes:
a rotating shaft arranged on the sealing element and extending to the outer side of the filter cylinder; and
the motor device is arranged at the outer side of the filter cylinder and connected with the rotating shaft;
the spherical center of the sealing element is positioned on the axis of the rotating shaft;
the rotating shaft and the motor device are both positioned on the outer side of the charging barrel.
7. The device for preparing conductive silver paste for heterojunction cell production according to claim 6, wherein,
the drive mechanism further includes:
the support disc is arranged on the turntable; and
a chute for positioning the motor device is arranged on the supporting disc;
the motor device is arranged below the filter cylinder, the top of the chute is in an opening shape, and the chute is consistent with the inclination angle of the filter cylinder.
8. The device for preparing conductive silver paste for heterojunction cell production according to claim 1, wherein,
the positioning mechanism comprises:
the annular plate is arranged on the outer side of the filter cylinder; and
and the clamping jaw assembly is movably arranged on the turntable and used for clamping the annular plate.
9. The device for preparing conductive silver paste for heterojunction cell production according to claim 8, wherein,
the clamping jaw assembly comprises two rotatable clamping plates, and the space of the two clamping plates after being opened is larger than the outer diameter of the charging barrel.
10. The device for preparing conductive silver paste for heterojunction cell production according to claim 1, wherein,
the top end of the filter cylinder is provided with a detachable cylinder cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223451667.2U CN219050635U (en) | 2022-12-23 | 2022-12-23 | Heterojunction battery production is with electrically conductive silver thick liquid preparation facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223451667.2U CN219050635U (en) | 2022-12-23 | 2022-12-23 | Heterojunction battery production is with electrically conductive silver thick liquid preparation facilities |
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| Publication Number | Publication Date |
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| CN219050635U true CN219050635U (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223451667.2U Active CN219050635U (en) | 2022-12-23 | 2022-12-23 | Heterojunction battery production is with electrically conductive silver thick liquid preparation facilities |
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| CN (1) | CN219050635U (en) |
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