CN108910112B - Packing method of aerogel felt and aerogel felt packing product - Google Patents
Packing method of aerogel felt and aerogel felt packing product Download PDFInfo
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- CN108910112B CN108910112B CN201810901381.9A CN201810901381A CN108910112B CN 108910112 B CN108910112 B CN 108910112B CN 201810901381 A CN201810901381 A CN 201810901381A CN 108910112 B CN108910112 B CN 108910112B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/20—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents
- B65B61/22—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents for placing protecting sheets, plugs, or wads over contents, e.g. cotton-wool in bottles of pills
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- Packaging Of Machine Parts And Wound Products (AREA)
Abstract
The invention relates to a packing method of aerogel felt and an aerogel felt packing product, which comprises the following steps: providing a winding shaft, and winding the aerogel felt on the winding shaft; winding a first stretch film over the aerogel blanket; winding an anti-seismic buffer layer on the first stretch film; and winding a second stretching film on the anti-seismic buffer layer to obtain the aerogel felt packaging product. According to the packing method of the aerogel felt, the aerogel felt is wound on the packing shaft by using the winding shaft, the aerogel felt is tightly wrapped by winding the first stretching film, then the anti-seismic buffer layer is further wound and wrapped on the first stretching film, and finally the second stretching film is further wound and wrapped on the anti-seismic buffer layer to form a solid and stable layer-by-layer structure with the first stretching film and the anti-seismic buffer layer, so that the aerogel particles or aerogel dust falling caused by collision and vibration in the processes of transportation, transportation or loading and unloading of products can be effectively avoided, and the products such as the aerogel felt and the like can be effectively protected.
Description
Technical Field
The invention relates to the field of aerogel felts, in particular to a packing method of an aerogel felt and a gel felt packing product.
Background
The products such as aerogel felt or blanket are flexible heat preservation felt which is formed by compounding nano silicon dioxide aerogel serving as a main material and reinforcing materials such as fibrofelt and the like through a special process. The heat-insulating material is characterized by low heat conductivity coefficient, certain tensile and compressive strength, convenient application in heat-insulating construction and belonging to novel heat-insulating materials. The aerogel felt is mainly used for heat preservation and insulation in the fields of industrial pipelines, storage tanks, industrial furnace bodies, power plants, escape capsules, warship bulkheads, motor cars, directly-buried pipelines, injection molding machines, detachable heat preservation sleeves, high-temperature steam pipelines for thick oil exploitation, transportation, household appliances, steel, nonferrous metals, glass and the like. The packing method of products such as aerogel felt or blanket in the market at present usually adopts the carton packing of four sides, because aerogel felt or blanket is the roll-type generally, therefore this kind of packing method leads to the product to shake, rub, warp in the carton easily in the transportation, and the shockproof effect is unsatisfactory, consequently can not play good guard action to products such as aerogel felt or blanket, thereby produce the problem of falling powder, the suitability is relatively poor.
Disclosure of Invention
Based on this, there is a need for a method of packaging aerogel blankets that avoids dusting problems.
A method of packaging aerogel blankets comprising the steps of:
providing a winding shaft, and winding the aerogel felt on the winding shaft;
winding a first stretch film over the aerogel blanket;
winding an anti-seismic buffer layer on the first stretch film;
and winding a second stretching film on the anti-seismic buffer layer to obtain the aerogel felt packaging product.
At present, the traditional packing method of aerogel felts is to adopt a square paper box or other containers to directly pack products, but the shockproof effect is poor, the products are easy to vibrate, rub and deform under pressure in the containers such as the paper box in the transportation process, and the products are difficult to carry. The aerogel felt is different from common felt or blanket products, the aerogel felt or blanket products are heat insulation materials formed by compounding aerogel and reinforcing materials, and the aerogel is light and easy to crack and fall to generate dust. In the processes of carrying, transmission transportation, storage stacking, product loading and unloading, logistics transportation and the like of products such as aerogel felts and the like, particularly during loading and unloading (namely loading and unloading), the problem of powder falling is easily caused by the fact that aerogel particles are cracked or aerogel dust falls off from the products such as aerogel felts and the like under the action of a relatively violent external force. The packing method of the aerogel felt abandons the traditional scheme, the aerogel felt is wound on the packing shaft by using the winding shaft, and the aerogel felt is tightly wrapped by winding the first stretching film, so that the aerogel felt is not easy to generate friction deformation in the transportation, loading and unloading processes. Then further wind parcel antidetonation buffer layer on first tensile membrane, can provide good antidetonation and buffering effect, effectively avoid the product to shake the aerogel granule that leads to or the aerogel dust drops because of the collision in transportation, transport or loading and unloading process, reduce the powder problem that falls that aerogel felt product surface brought because of transportation, removal etc.. And finally, the second stretching film is wound and wrapped on the anti-seismic buffer layer, and the second stretching film, the first stretching film and the anti-seismic buffer layer form a solid and stable layer-by-layer structure, so that products such as aerogel felts are well and effectively protected, and inconvenience of construction environment caused by falling aerogel dust in the heat preservation construction process is avoided. Meanwhile, the packaged aerogel felt is cylindrical, is convenient to carry and hoist in production line operation, and is suitable for realizing the integrated control of an intelligent flow production line.
In one embodiment, the step of wrapping the first oriented film, the wrapped shock absorber layer, and the wrapped second oriented film comprises: and winding the first stretched film, the anti-seismic buffer layer and the second stretched film in the circumferential direction of the winding shaft and from one end of the winding shaft to the other end of the winding shaft, wherein the width of each turn of the first stretched film overlapped with the adjacent turn is 20-50% of the width of the first stretched film, the width of each turn of the anti-seismic buffer layer overlapped with the adjacent turn is 20-50% of the width of the anti-seismic buffer layer, and the width of each turn of the second stretched film overlapped with the adjacent turn is 20-50% of the width of the second stretched film.
In one embodiment, the width of each turn of the shock resistant buffer winding overlapping an adjacent turn is greater than the width of the first stretch film winding overlapping an adjacent turn and less than the width of the second stretch film winding overlapping an adjacent turn.
In one embodiment, the first stretched film, the shock resistant cushion layer, and the second stretched film each have a width that is less than one-third of the width of the aerogel blanket.
In one embodiment, the method further comprises, before the winding the shock-resistant buffer layer, the steps of: providing two end covers, and respectively installing the two end covers at two ends of the winding shaft.
In one embodiment, both ends of the first stretch film wound around the winding shaft in the axial direction of the winding shaft protrude from both ends of the winding shaft by 50mm to 100mm, respectively, and the end cap is pressed against a portion of the first stretch film protruding from the winding shaft when the end cap is attached.
In one embodiment, the two ends of the shock-resistant buffer layer wound on the first stretch film along the axial direction of the winding shaft respectively protrude from the two ends of the winding shaft by 50-100 mm so as to cover the end cap.
In one embodiment, the winding shaft is in a hollow round tube shape, the center of the end cover is provided with a guide post, and the end cover is installed on the winding shaft by inserting the guide post into the winding shaft.
In one embodiment, the anti-seismic buffer layer is made of pearl wool.
The invention also provides an aerogel felt packaging product which comprises a winding shaft, an aerogel felt, a first stretching film, an anti-seismic buffer layer and a second stretching film, wherein the aerogel felt is wound on the winding shaft, the first stretching film is wound on the aerogel felt, the anti-seismic buffer layer is wound on the first stretching film, and the second stretching film is wound on the anti-seismic buffer layer.
Drawings
FIG. 1 is a schematic diagram of the construction of an embodiment of an aerogel blanket packaged product;
FIG. 2 is a cross-sectional view of the aerogel blanket packaged product shown in FIG. 1;
figure 3 is a side view of an end cap of the aerogel blanket package shown in figure 1.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the method for packaging an aerogel blanket according to an embodiment of the present invention includes steps S1 to S4:
s1, providing a winding shaft 10, and winding the aerogel blanket 20 on the winding shaft 10.
S2, the first stretch film 30 is wound on the aerogel blanket 20.
S3, the shock-resistant buffer layer 40 is wound on the first stretched film 30.
And S4, winding the second stretch film 50 on the anti-seismic buffer layer 40 to obtain the aerogel felt packaging product.
At present, the traditional packing method of aerogel felts is to adopt a square paper box or other containers to directly pack products, but the shockproof effect is poor, the products are easy to vibrate, rub and deform under pressure in the containers such as the paper box in the transportation process, and the products are difficult to carry. The aerogel felt is different from common felt or blanket products, the aerogel felt or blanket products are heat insulation materials formed by compounding aerogel and reinforcing materials, and the aerogel is light and easy to crack and fall to generate dust. In the processes of carrying, transmission transportation, storage stacking, product loading and unloading, logistics transportation and the like of products such as aerogel felts and the like, particularly during loading and unloading (namely loading and unloading), the problem of powder falling is easily caused by the fact that aerogel particles are cracked or aerogel dust falls off from the products such as aerogel felts and the like under the action of a relatively violent external force.
According to the packing method of the aerogel felt, the traditional scheme is abandoned, the aerogel felt is wound on the packing shaft through the winding shaft, and the aerogel felt is tightly wrapped through the winding of the first stretching film, so that the aerogel felt is not easy to generate friction deformation in the transportation, loading and unloading processes. Then further wind parcel antidetonation buffer layer on first tensile membrane, can provide good antidetonation and buffering effect, effectively avoid the product to shake the aerogel granule that leads to or the aerogel dust drops because of the collision in transportation, transport or loading and unloading process, reduce the powder problem that falls that aerogel felt product surface brought because of transportation, removal etc.. And finally, the second stretching film is wound and wrapped on the anti-seismic buffer layer, and the second stretching film, the first stretching film and the anti-seismic buffer layer form a solid and stable layer-by-layer structure, so that products such as aerogel felts are well and effectively protected, and inconvenience of construction environment caused by falling aerogel dust in the heat preservation construction process is avoided. Meanwhile, the packaged aerogel felt is cylindrical, is convenient to carry and hoist in production line operation, and is suitable for realizing the integrated control of an intelligent flow production line.
In one embodiment, the length of the winding shaft 10 is equal to the width of the aerogel blanket 20, which facilitates direct winding of the entire aerogel blanket 20 onto the winding shaft 10, with an excessively long winding shaft 10 increasing the likelihood of slippage and misalignment of the aerogel blanket 20, and an excessively short winding shaft being detrimental to the improvement of solidity.
In one embodiment, the following steps are also included prior to winding the shock resistant buffer layer 40: two end caps 60 are provided, and the two end caps 60 are attached to both ends of the winding shaft 10, respectively. Thus, the end caps 60 mounted at both ends can block the first stretch film 30 from moving axially along the winding shaft 10, so that the first stretch film 30 is fixed in position relative to the aerogel blanket 20, and is not easy to dislocate, be cheap or be broken by friction, thereby improving the stability of the protection effect.
In one embodiment, both ends of the first stretched film 30 wound around the winding shaft 10 in the axial direction of the winding shaft 10 protrude from both ends of the winding shaft 10 by 50mm to 100mm, respectively, and the end cap 60 is attached to a portion of the first stretched film 30 protruding from the winding shaft 10 in a manner of pressing the end cap 60. Thus, the two ends of the first stretching film 30 are fixed by pressing the end covers 60, so that the first stretching film 30 is more stable, dislocation, deviation or friction fracture between the first stretching film 30 and the aerogel felt 20 can be further prevented, and the protection effect is improved.
In one embodiment, the winding shaft 10 is in the shape of a hollow circular tube, and as shown in fig. 3, the end cap 60 is provided with a guide post 61 at the center thereof, and the end cap 60 is mounted to the winding shaft 10 by inserting the guide post 61 into the winding shaft 10. Like this, insert the hollow part of coiling axle 10 through guide post 61, can make end cover 60 stably install in the both ends of coiling axle 10 to provide certain holding power, make the product solidity of packing higher, resistant extrusion anti-seismic performance is better, can conveniently carry out mechanized operation and transport simultaneously, if adopt lifting device, fork truck etc. to utilize the hollow part of coiling axle 10 to hoist or transport etc.. Optionally, the outer diameter of the guiding column 61 is 5mm to 10mm smaller than the inner diameter of the winding shaft 10, so that the guiding column 61 can be stably inserted into the winding shaft 10 and is not easy to fall out. Optionally, the winding shaft 10 has a tube wall thickness of 5mm to 30 mm.
In one embodiment, the specific step of winding the first stretch film 30 includes: the first stretched film 30 is wound around the winding shaft 10 in the circumferential direction and wound from one end of the winding shaft 10 to the other end of the winding shaft 10, and the first stretched film 30 has a certain width, wherein the width of each winding overlapping with the adjacent winding is 20% to 50% of the width of the first stretched film 30. So, adopt the width to be less than the first tensile membrane 30 of aerogel felt 20 to carry out many circles of convolutes and carry out the part and overlap, multiplicable friction surface improves frictional force, and layer upon layer covers the stack and makes the structure more durable firm, can effectively avoid taking place dislocation, skew or friction between first tensile membrane 30 and aerogel felt 20 and break in the transportation to reach better protection effect.
Further, the specific steps of winding the anti-seismic buffer layer 40 include: the anti-seismic buffer layer 40 is wound around the winding shaft 10 in the circumferential direction and is wound from one end of the winding shaft 10 to the other end of the winding shaft 10, the anti-seismic buffer layer 40 has a certain width, and the overlapping width of each winding circle and the adjacent winding circle is 20% -50% of the width of the anti-seismic buffer layer. Further, the specific step of winding the second stretched film 50 includes: the second stretched film 50 is wound around the winding shaft 10 in the circumferential direction and wound from one end of the winding shaft 10 to the other end of the winding shaft 10, and the second stretched film 50 has a certain width, wherein the width of each winding overlapping with the adjacent winding is 20% to 50% of the width of the second stretched film 50. Therefore, the friction force can be further increased, the stability of the packaged product is improved, and dislocation deviation or friction damage is prevented.
In one embodiment, the width of each turn of the shock-resistant buffer layer 40 that overlaps an adjacent turn is greater than the width of the first stretched film 30 that overlaps an adjacent turn and less than the width of the second stretched film 50 that overlaps an adjacent turn. The gradual increase of the lamination degree from inside to outside is selected according to practical experience, which is beneficial to the improvement of the compactness of the packaged product, because the total damage is gradually reduced from outside to inside in the process of carrying.
In one embodiment, the widths of the first stretch film 30, the shock-resistant buffer layer 40, and the second stretch film 50 are less than one third of the width of the aerogel blanket 20, so that the tensile strength and the overlapping degree of the first stretch film 30, the shock-resistant buffer layer 40, and the second stretch film 50 can be effectively ensured, and the stability of the packaged product can be ensured.
In one embodiment, the two ends of the shock-resistant buffer layer 40 wound on the first stretch film 30 in the axial direction of the winding shaft 10 protrude from the two ends of the winding shaft 10 by 50mm to 100mm, respectively, for covering the end cap 60. In this manner, the shock absorbing layer 40 covers the end caps 60 mounted at both ends, providing a certain pressure to prevent the end caps 60 from falling or shifting, thereby making the product more stable and sturdy accordingly. Further, both ends of the second stretch film 50 wound around the anti-seismic buffer layer 40 in the axial direction of the winding shaft 10 protrude from both ends of the winding shaft 10 by 50 to 100mm, respectively, so as to cover the end caps 60. Thus, the second stretch film 50 at the outermost side covers the anti-seismic buffer layer 40 and the end cover 60, and pressure is further provided to prevent the end cover 60 and the anti-seismic buffer layer 40 from shifting, so that the product is more stable and firmer, and the protection effect is improved.
Preferably, the anti-shock buffer layer 40 is made of pearl wool. The pearl cotton is with low costs, and is more environmental protection than the leatheroid, only needs thinner thickness can provide better antidetonation effect, is suitable for mechanical operation, and has the rainwater prevention effect, because the use place of products such as aerogel felt, for example petrochemical pipeline heat preservation engineering job site etc. is mostly outdoor, possesses waterproof function and can improve the practicality, and the use scene is more extensive.
In one embodiment, the widths of the first stretched film 30, the anti-shock buffer layer 40 and the second stretched film 50 are 480mm to 520mm, the thicknesses of the first stretched film 30 and the second stretched film 50 are 0.01mm to 0.1mm, and the thickness of the anti-shock buffer layer 40 is 1mm to 5mm, so that the packaging volume is not greatly influenced, and the space utilization rate is improved.
As shown in fig. 1 and 2, an aerogel blanket package according to an embodiment of the present invention includes a winding shaft 10, an aerogel blanket 20, a first stretch film 30, a shock-resistant cushioning layer 40, and a second stretch film 50, wherein the aerogel blanket is wound around the winding shaft 10, the first stretch film 30 is wound around the aerogel blanket 20, the shock-resistant cushioning layer 40 is wound around the first stretch film 30, and the second stretch film 50 is wound around the shock-resistant cushioning layer 40.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A method of packaging aerogel blankets, comprising the steps of:
providing a winding shaft, and winding the aerogel felt on the winding shaft;
winding a first stretch film over the aerogel blanket;
winding an anti-seismic buffer layer on the first stretch film;
winding a second stretching film on the anti-seismic buffer layer to obtain an aerogel felt packaging product;
the specific steps of winding the first stretch film, winding the shock-resistant buffer layer, and winding the second stretch film include: winding the first stretched film, the anti-seismic buffer layer and the second stretched film in the circumferential direction of the winding shaft and from one end of the winding shaft to the other end of the winding shaft, wherein the overlapping width of each circle of the first stretched film and the adjacent circle is 20-50% of the width of the first stretched film, the overlapping width of each circle of the anti-seismic buffer layer and the adjacent circle is 20-50% of the width of the anti-seismic buffer layer, and the overlapping width of each circle of the second stretched film and the adjacent circle is 20-50% of the width of the second stretched film;
the percentage of the overlapping width of each circle and the adjacent circle of the anti-seismic buffer layer in the width of the anti-seismic buffer layer is larger than the percentage of the overlapping width of each circle and the adjacent circle of the first stretching film in the width of the first stretching film, and is smaller than the percentage of the overlapping width of each circle and the adjacent circle of the second stretching film in the width of the second stretching film.
2. The method of packaging of claim 1, wherein the first stretched film, the shock resistant cushion layer, and the second stretched film each have a width that is less than one-third of a width of the aerogel blanket.
3. The packaging method according to any one of claims 1 to 2, further comprising, before the winding of the shock-resistant buffer layer, the steps of: providing two end covers, and respectively installing the two end covers at two ends of the winding shaft.
4. The packaging method according to claim 3, wherein both ends of the first stretch film wound around the winding shaft in the axial direction of the winding shaft protrude from both ends of the winding shaft by 50mm to 100mm, respectively, and the end cap is attached to a portion of the first stretch film protruding from the winding shaft.
5. The packaging method according to claim 4, wherein both ends of the shock-resistant buffer layer wound on the first stretch film in the axial direction of the winding shaft protrude from both ends of the winding shaft by 50mm to 100mm, respectively, for covering the end caps.
6. The packaging method according to claim 3, wherein the winding shaft has a hollow circular tube shape, and a guide post is provided at the center of the end cap, and the end cap is attached to the winding shaft by inserting the guide post into the winding shaft.
7. The packaging method according to any one of claims 1 to 2, wherein the shock-resistant buffer layer is made of pearl wool.
8. An aerogel felt packaging product, comprising a winding shaft, an aerogel felt, a first stretch film, an anti-seismic buffer layer and a second stretch film, wherein the aerogel felt is wound on the winding shaft, the first stretch film is wound on the aerogel felt, the anti-seismic buffer layer is wound on the first stretch film, and the second stretch film is wound on the anti-seismic buffer layer; the first stretched film, the anti-seismic buffer layer and the second stretched film are wound in the circumferential direction of the winding shaft and are wound from one end of the winding shaft to the other end of the winding shaft, wherein the overlapping width of each circle and adjacent circle of the first stretched film is 20% -50% of the width of the first stretched film, the overlapping width of each circle and adjacent circle of the anti-seismic buffer layer is 20% -50% of the width of the anti-seismic buffer layer, and the overlapping width of each circle and adjacent circle of the second stretched film is 20% -50% of the width of the second stretched film; the percentage of the overlapping width of each circle and the adjacent circle of the anti-seismic buffer layer in the width of the anti-seismic buffer layer is larger than the percentage of the overlapping width of each circle and the adjacent circle of the first stretching film in the width of the first stretching film, and is smaller than the percentage of the overlapping width of each circle and the adjacent circle of the second stretching film in the width of the second stretching film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810901381.9A CN108910112B (en) | 2018-08-09 | 2018-08-09 | Packing method of aerogel felt and aerogel felt packing product |
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| CN201810901381.9A CN108910112B (en) | 2018-08-09 | 2018-08-09 | Packing method of aerogel felt and aerogel felt packing product |
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| CN108910112A CN108910112A (en) | 2018-11-30 |
| CN108910112B true CN108910112B (en) | 2020-08-25 |
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| CN113415490A (en) * | 2021-05-31 | 2021-09-21 | 佛山品特塑彩新材料有限公司 | Packaging process of film coiled material |
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| CN201458051U (en) * | 2009-05-26 | 2010-05-12 | 张海荣 | Backing paper-free cold lamination film |
| CN201545323U (en) * | 2009-09-29 | 2010-08-11 | 芜湖红方包装科技有限公司 | Shock-resistance cushion packaging material |
| CN202038597U (en) * | 2011-01-26 | 2011-11-16 | 新疆天业节水灌溉股份有限公司 | Drip irrigation tape packaging structure |
| CN202272358U (en) * | 2011-09-21 | 2012-06-13 | 株式会社有泽制作所 | Roll packaging body of material for FPC (Flexible Printed Circuit) |
| CN103754503A (en) * | 2013-12-23 | 2014-04-30 | 佛山龙塑工业塑胶有限公司 | PVC roll film with outer package and packaging method thereof |
| CN206579233U (en) * | 2017-01-22 | 2017-10-24 | 台州豪达机电有限公司 | A kind of bidirectional stretching polypropylene film of high damping |
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Address after: Area 4, Yinghong Industrial Zone, Yinghong Town, Yingde City, Qingyuan City, Guangdong Province 513044 Patentee after: Guangdong Ellison Technology Co.,Ltd. Address before: Area 4, Yinghong Industrial Zone, Yinghong Town, Yingde City, Qingyuan City, Guangdong Province 513044 Patentee before: GUANGDONG ALISON HI-TECH Co.,Ltd. |
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