CN105439475B - A kind of vacuum glass auxiliary production line - Google Patents
A kind of vacuum glass auxiliary production line Download PDFInfo
- Publication number
- CN105439475B CN105439475B CN201510935118.8A CN201510935118A CN105439475B CN 105439475 B CN105439475 B CN 105439475B CN 201510935118 A CN201510935118 A CN 201510935118A CN 105439475 B CN105439475 B CN 105439475B
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- China
- Prior art keywords
- glass substrate
- conveying device
- glass
- equipment
- production line
- 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.)
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- 239000011521 glass Substances 0.000 title claims abstract description 138
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 80
- 238000002360 preparation method Methods 0.000 claims abstract description 43
- 238000001465 metallisation Methods 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 28
- 229910000679 solder Inorganic materials 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 17
- 238000007639 printing Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 5
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000007747 plating Methods 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 241000227425 Pieris rapae crucivora Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Surface Treatment Of Glass (AREA)
- Specific Conveyance Elements (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The invention discloses a kind of vacuum glass to assist production line, which includes by the sequentially connected metalization layer of the first rollgang and supporter preparation section, solder deployment device, closes sheet devices and welding edge banding apparatus；The side of first conveying device is provided with the second conveying device, first conveying device is for transporting the first glass substrate, second conveying device is for transporting the second glass substrate, the conjunction sheet devices include the shaft being arranged between the first, second conveying device, it is connected with the swing arm below the second glass substrate of the second conveying device gap insertion with the shaft, vacuum chuck or clamping device are installed in the swing arm；When work, the vacuum chuck or clamping device grab the second glass substrate, overturn swing arm around the shaft, and the second glass substrate is placed in the first glass substrate in the first conveying device, complete to close piece.The upstream of pumped vacuum systems is arranged in the auxiliary production line, is able to carry out the processing of multiple processes before vacuum glass vacuumizes, and provides technology and equipment guarantee for the continuous and automatic production of vacuum glass.
Description
Technical field
The invention belongs to vacuum glass manufacturing fields more particularly to a kind of vacuum glass to assist production line.
Background technique
In the production process of vacuum glass, the glass plate after edge sealing, which can be sent in pumped vacuum systems, to be exhausted, seals
Process ultimately forms finished product vacuum glass after sealing.But before entering pumped vacuum systems, need to carry out glass plate multiple
The processing of link needs a tinuous production to improve the automation processing stage of vacuum glass come before realizing and vacuumizing
Various working processes.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of vacuum glass to assist production line,
The upstream of pumped vacuum systems is arranged in the auxiliary production line, is able to carry out the processing of multiple processes before vacuum glass vacuumizes,
Technology and equipment guarantee is provided for the continuous and automatic production of vacuum glass.
In order to achieve the above object, a kind of vacuum glass of the present invention assists production line, which includes by first
The sequentially connected metalization layer of rollgang and supporter preparation section, close sheet devices and welding edge banding apparatus at solder deployment device；
The side of first conveying device is provided with the second conveying device, first conveying device is for transporting the first glass base
Piece, second conveying device include setting in the first, second conveying dress for transporting the second glass substrate, the conjunction sheet devices
Shaft between setting is connected with the swing arm below the second glass substrate of the second conveying device gap insertion, institute with the shaft
It states and vacuum chuck or clamping device is installed in swing arm；When work, the vacuum chuck or clamping device grab the second glass base
Piece overturns swing arm around the shaft, and the second glass substrate is placed in the first glass substrate in the first conveying device, completes to close piece.
Further, the metalization layer and supporter preparation section include: that metalization layer Preparation equipment and supporter preparation are set
It is standby.
Further, the metalization layer Preparation equipment includes: metal paste printing equipment, metal paste drying equipment and gold
Belong to slurry agglomerating plant.
Further, above support Preparation equipment includes: glass glaze printing equipment, glass glaze drying equipment and glass
Glaze agglomerating plant.
Further, the metalization layer Preparation equipment and supporter Preparation equipment are integral equipment.
Further, the metalization layer and supporter preparation section include: printing equipment, drying equipment and agglomerating plant.
Further, when the glass substrate is film-coated glass substrate, the auxiliary production line glass substrate pretreatment section
It further include being arranged before metalization layer Preparation equipment, for the membrane removal for carrying out membrane removal to edge sealing region to the film-coated glass substrate
Device.
Further, several welding edge banding apparatus are provided on the auxiliary production line.
Further, when the welding edge banding apparatus is one, which is arranged in the conveying device
Side, the conveying direction of the welding edge banding apparatus and the conveying direction of conveying device are vertical.
Further, when the welding edge banding apparatus is one, the conveying direction of the welding edge banding apparatus and the conveying
The conveying direction of device is consistent.
Further, when the welding edge banding apparatus is multiple, which is arranged in the conveying device
One or both sides, the conveying direction of the welding edge banding apparatus are vertical with the conveying direction of the conveying device.
A kind of vacuum glass auxiliary production line, which includes by the sequentially connected metallization of the first conveying device
Layer and supporter preparation section, solder deployment device, close sheet devices and welding edge banding apparatus at glass fibre reinforced plastic equipment；Described first
The side of conveying device is provided with the second conveying device, and first conveying device is for transporting the first glass substrate, and described the
For two conveying devices for transporting the second glass substrate, the conjunction sheet devices include being arranged between the first, second conveying device
Multi-freedom-degreemanipulator manipulator arm is equipped with vacuum chuck or clamping device on the mechanical arm；When work, the vacuum chuck or
Clamping device grabs the second glass substrate, and the second glass substrate is placed in the first glass substrate in the first conveying device,
It completes to close piece.
In vacuum glass auxiliary production line of the invention, metalization layer Preparation equipment is used to metal paste being printed on glass
Metalization layer is constituted after the edge sealing region of glass substrate and cured processing；Solder deployment device is for laying the solder of edge sealing
And it is fixed in the edge sealing region of glass substrate；Supporter Preparation equipment is used to for glass glaze being printed on glass substrate setting position
It sets and forms supporter after cured processing；Sheet devices are closed to be used to upper layer glass substrate being placed on lower layer's glass substrate；Weldering
Edge banding apparatus is connect to be used for the edge sealing region welded seal of upper layer glass substrate and lower layer's glass substrate.
When upper glass substrate and/or lower glass substrate are coated glass, film removing device for remove glass substrate and/
Or lower glass substrate to the film plating layer in edge sealing region.
When being only equipped with a welding edge banding apparatus on production line, the conveying side of conveying device is arranged in welding edge banding apparatus
Upwards, the carriage direction of glass substrate is parallel with it；Or the side of conveying device is set, the carriage direction of glass substrate with
It is vertical.It can be improved edge sealing efficiency when several are arranged and welds edge banding apparatus, welding edge banding apparatus, which can be set, to be conveyed
The same side of device can also be disposed on the two sides of conveying device.The upper of pumped vacuum systems is arranged in the auxiliary production line
Trip, is able to carry out the processing of multiple processes before vacuum glass vacuumizes, provides for the continuous and automatic production of vacuum glass
Technology and equipment guarantee.
Detailed description of the invention
Fig. 1 is the first connection schematic diagram that vacuum glass of the present invention assists production line；
Fig. 2 is the schematic diagram that metalization layer and supporter prepare section；
Fig. 3 is the schematic diagram of 2 metalization layer Preparation equipment of number in Fig. 2；
Fig. 4 is the schematic diagram of 6 supporter Preparation equipment of number in Fig. 2；
Fig. 5 is second of connection schematic diagram that vacuum glass of the present invention assists production line；
Fig. 6 is the third connection schematic diagram that vacuum glass of the present invention assists production line；
Fig. 7 is the 4th kind of connection schematic diagram that vacuum glass of the present invention assists production line；
Fig. 8 is the structural schematic diagram for closing sheet devices；
Fig. 9 is the 5th kind of connection schematic diagram that vacuum glass of the present invention assists production line.
Specific embodiment
With reference to the accompanying drawing, the specific embodiment that the present invention will be described in detail.
As shown in Figure 1, Figure 2, Fig. 3, Fig. 4 and Fig. 8 show a kind of present invention vacuum glass auxiliary production line the first is specific
Embodiment, in the present embodiment, at least a piece of in upper layer glass substrate and lower layer's glass substrate is coated glass, film plating layer
It can be thermal reflecting coating, low-radiation film or conductive film.The auxiliary production line includes by the sequentially connected metal of the first conveying device 7
Change layer and supporter preparation section 1, close sheet devices 4 and welding edge banding apparatus 5；It is provided in the side of first conveying device 7
Second conveying device 8, first conveying device 7 are used for for transporting the first glass substrate 101, second conveying device 8
The second glass substrate 100 is transported, the sheet devices 4 that close include the shaft 41 being arranged between the first, second conveying device, with institute
It states shaft 41 and is connected with the swing arm 42 for being inserted into 100 lower section of the second glass substrate along 8 gap of the second conveying device, pacify in the swing arm
Equipped with vacuum chuck 43；When work, the vacuum chuck 43 grabs the second glass substrate 100, around the shaft 41 overturning swing arm 42, the
Two glass substrates 100 are placed in the first glass substrate 101 in the first conveying device 7, complete to close piece.In the present embodiment,
The clamping device known can be used to substitute the crawl that vacuum chuck completes upper layer glass substrate.
Wherein, when the glass substrate is film-coated glass substrate, the auxiliary production line further includes that setting is being metallized
Before layer Preparation equipment, for the film removing device (not shown) for carrying out membrane removal to edge sealing region to the film-coated glass substrate.Membrane removal
Device be used to remove glass substrate and/or lower glass substrate to the film plating layer in edge sealing region, in favor of in the region system
Standby metalization layer；When upper layer glass substrate and all common white glass of lower layer's glass substrate, then no setting is required in production line removes
Film device.
Metalization layer and supporter preparation section 1 are provided with metalization layer Preparation equipment 2 and supporter Preparation equipment 6.Wherein,
Metalization layer Preparation equipment 2 includes: that metal paste printing equipment 2-1 is used to the metal paste for constituting metalization layer being placed in upper layer
Four side of glass substrate and lower layer's glass substrate to which in edge sealing region, printing equipment 2-1 is specially screen printing in the present embodiment
Brush equipment or spraying printing equipment；Metal paste drying equipment 2-2 is used to dry the metal paste in edge sealing region；Metal pulp
Metal paste high temperature sintering after material agglomerating plant 2-3 is used to dry forms metalization layer.Supporter Preparation equipment 6 includes:
Glass glaze printing equipment 6-1, which is used to for glass glaze to be printed on glass substrate setting position, forms dot bulge array, glass
Glaze drying equipment 6-2 is for drying glass glaze, and glass glaze agglomerating plant 6-3 is for consolidating glass glaze high temperature sintering
It is fixed to form supporter on a glass substrate；Above-mentioned metal paste agglomerating plant 2-3 and glass glaze agglomerating plant 6-3 can distinguish
Tempering processing is carried out to glass substrate.Similarly, can also metalization layer and supporter preparation section 1 and solder deployment device 3 it
Between station on setting glass fibre reinforced plastic equipment (not shown) complete glass tempering processing.
In addition, metalization layer Preparation equipment 2 and supporter Preparation equipment 6 can be integral equipment comprising: printing is set
Standby, drying equipment and agglomerating plant can functionally realize the printing, drying and burning of metal paste and glass glaze respectively
Knot, sintering are completed at the same time the tempering processing of glass substrate.
Sheet devices 4 are closed to be used to upper layer glass substrate being placed on lower layer's glass substrate；Weld edge banding apparatus 5 be used for by
The edge sealing region welded seal of layer glass substrate and lower layer's glass substrate.Wherein, it is only equipped with a welding edge sealing in the production line
The conveying direction (see arrow direction in figure) of device 5, the conveying direction and the first conveying device 7 that weld edge banding apparatus 5 is consistent.
Embodiment 2
It is illustrated in figure 5 a kind of second of specific embodiment of vacuum glass auxiliary production line of the present invention, with the first reality
It is essentially identical to apply example, the difference is that, the side of the first conveying device 7 is arranged in the welding edge banding apparatus 5 in the present embodiment,
The conveying direction for welding edge banding apparatus 5 is vertical with conveying direction (see the arrow in figure) of the first conveying device 7.It can use one
Lateral conveying device realizes the transmission of glass substrate.
Embodiment 3
It is illustrated in figure 6 a kind of the third specific embodiment of vacuum glass auxiliary production line of the present invention, with the first reality
It is essentially identical to apply example, the difference is that, be equipped on the auxiliary production line in the present embodiment three welding edge banding apparatus 5a,
5b, 5c, these three welding edge banding apparatus 5a, 5b, 5c are located at the same side of the first conveying device 7, weld edge banding apparatus 5a, 5b,
The conveying direction of 5c is vertical with conveying direction (see the arrow in figure) of the first conveying device 7.
Embodiment 4
It is illustrated in figure 7 a kind of 5th kind of specific embodiment of vacuum glass auxiliary production line of the present invention, with the first reality
It is essentially identical to apply example, the difference is that, be equipped on the auxiliary production line in the present embodiment three welding edge banding apparatus 5a,
5b, 5c, these three welding edge banding apparatus 5a, 5b, 5c are located at the two sides of the first conveying device 7, weld edge banding apparatus 5a, 5b, 5c
Conveying direction it is vertical with conveying direction (see the arrow in figure) of the first conveying device 7.
Embodiment 5
It is illustrated in figure 9 a kind of 5th kind of specific embodiment of vacuum glass auxiliary production line of the present invention, with the first reality
It is essentially identical to apply example, the difference is that, the conjunction sheet devices of the auxiliary production line in the present embodiment include setting in the first conveying
Multi-freedom-degreemanipulator manipulator arm 10 between device 7 and the second conveying device 8 is equipped with vacuum chuck on the mechanical arm 10
11；When work, the vacuum chuck 11 grabs the second glass substrate, and the second glass substrate is placed in the first conveying device 7
The first glass substrate on, complete close piece.In the present embodiment, it is known that clamping device can be used to substitute vacuum chuck 11 completion
The crawl of upper layer glass substrate.
The first conveying device 7 and/or the second conveying device 8 in above-described embodiment 1 to 5 can be specifically using well known defeated
Roller-way, conveyer belt or air-flotation type conveying device are sent, conveyor surface can be parallel to the horizontal plane, can also be horizontal by a setting
Angle obliquely conveys glass substrate.Both first conveying device 7 is parallel with the conveying direction of the second conveying device 8, can also
Conveying direction is in a certain angle.
Above-mentioned example is only intended to illustrate that the present invention, embodiments of the present invention are not limited to these examples, this field skill
What art personnel were made meets the various specific embodiments of inventive concept all within protection scope of the present invention.
Claims (2)
1. a kind of vacuum glass assists production line, which is characterized in that the auxiliary production line includes successively being connected by the first rollgang
Metalization layer and supporter preparation section, solder deployment device, conjunction sheet devices and the welding edge banding apparatus connect；In first conveying
The side of device is provided with the second conveying device, and for first conveying device for transporting the first glass substrate, described second is defeated
Send device for transport the second glass substrate, the conjunction sheet devices include the shaft being arranged between the first, second conveying device,
It is connected with the swing arm below the second glass substrate of the second conveying device gap insertion with the shaft, is equipped in the swing arm
Vacuum chuck or clamping device；When work, the vacuum chuck or clamping device grab the second glass substrate, around the shaft overturning pendulum
Arm, the second glass substrate are placed in the first glass substrate in the first conveying device, complete to close piece；The metalization layer and branch
Supportting object preparation section includes: metalization layer Preparation equipment and supporter Preparation equipment；The metalization layer Preparation equipment includes metal
Slurry printing equipment, metal paste drying equipment and metal paste agglomerating plant；Above support Preparation equipment includes: glass glaze
Expect printing equipment, glass glaze drying equipment and glass glaze agglomerating plant；The metalization layer Preparation equipment and supporter system
Standby equipment is integral equipment；Several welding edge banding apparatus are provided on the auxiliary production line；Multiple welding
The one or both sides of the conveying device are arranged in edge banding apparatus, the conveying direction of the welding edge banding apparatus and the conveying device
Conveying direction it is vertical；When the glass substrate is film-coated glass substrate, the auxiliary production line further includes being arranged in metal
Before changing layer Preparation equipment, for the film removing device for carrying out membrane removal to edge sealing region to the film-coated glass substrate.
2. a kind of vacuum glass assists production line, which is characterized in that the auxiliary production line includes successively being connected by the first conveying device
Metalization layer and supporter preparation section, glass fibre reinforced plastic equipment, solder deployment device, conjunction sheet devices and the welding edge banding apparatus connect；
The side of first conveying device is provided with the second conveying device, first conveying device is for transporting the first glass base
Piece, second conveying device include setting in the first, second conveying dress for transporting the second glass substrate, the conjunction sheet devices
Multi-freedom-degreemanipulator manipulator arm between setting is equipped with vacuum chuck or clamping device on the mechanical arm；It is described true when work
Suction disk or clamping device grab the second glass substrate, the first glass the second glass substrate being placed in the first conveying device
On substrate, complete to close piece；The metalization layer and supporter preparation section include: that metalization layer Preparation equipment and supporter preparation are set
It is standby；The metalization layer Preparation equipment includes that metal paste printing equipment, metal paste drying equipment and metal paste sintering are set
It is standby；Above support Preparation equipment includes: that glass glaze printing equipment, glass glaze drying equipment and glass glaze sintering are set
It is standby；The metalization layer Preparation equipment and supporter Preparation equipment are integral equipment；If being provided on the auxiliary production line
The dry welding edge banding apparatus；The one or both sides of the conveying device, the weldering is arranged in multiple welding edge banding apparatus
The conveying direction for connecing edge banding apparatus is vertical with the conveying direction of the conveying device；When the glass substrate is film-coated glass substrate
When, the auxiliary production line further include be arranged before metalization layer Preparation equipment, for the film-coated glass substrate to edge sealing
The film removing device of region progress membrane removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510935118.8A CN105439475B (en) | 2015-12-15 | 2015-12-15 | A kind of vacuum glass auxiliary production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510935118.8A CN105439475B (en) | 2015-12-15 | 2015-12-15 | A kind of vacuum glass auxiliary production line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105439475A CN105439475A (en) | 2016-03-30 |
| CN105439475B true CN105439475B (en) | 2019-02-22 |
Family
ID=55550185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510935118.8A Active CN105439475B (en) | 2015-12-15 | 2015-12-15 | A kind of vacuum glass auxiliary production line |
Country Status (1)
| Country | Link |
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| CN (1) | CN105439475B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249559A (en) * | 2010-12-10 | 2011-11-23 | 洛阳兰迪玻璃机器有限公司 | Vacuum glass component |
| CN202430129U (en) * | 2012-01-18 | 2012-09-12 | 林嘉宏 | Full-automatic vacuum glass manufacturing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079619B (en) * | 2009-11-27 | 2012-02-15 | 洛阳兰迪玻璃机器股份有限公司 | Glass plate combination sealing method |
| CN104743897A (en) * | 2013-12-25 | 2015-07-01 | 戴长虹 | Metal-welded sealed plain vacuum glass with edges sealed by sealing grooves and manufacturing method thereof |
| CN205223007U (en) * | 2015-12-15 | 2016-05-11 | 洛阳兰迪玻璃机器股份有限公司 | Vacuum glass auxiliary production line |
-
2015
- 2015-12-15 CN CN201510935118.8A patent/CN105439475B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249559A (en) * | 2010-12-10 | 2011-11-23 | 洛阳兰迪玻璃机器有限公司 | Vacuum glass component |
| CN202430129U (en) * | 2012-01-18 | 2012-09-12 | 林嘉宏 | Full-automatic vacuum glass manufacturing device |
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| Publication number | Publication date |
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| CN105439475A (en) | 2016-03-30 |
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Effective date of registration: 20230316 Address after: 471000 Building 1, northwest corner of the intersection of Keji Avenue and Zhuge Avenue, Yibin District, Luoyang City, Henan Province Patentee after: Luoyang Landi Vacuum Glass Technology Co.,Ltd. Address before: No. 6, Hope Avenue, Yibin District, Luoyang City, Henan Province, 471000 Patentee before: LUOYANG LANDGLASS TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 471000 Building 1, northwest corner of the intersection of Keji Avenue and Zhuge Avenue, Yibin District, Luoyang City, Henan Province Patentee after: Luoyang Landi Titanium Metal Vacuum Glass Co.,Ltd. Country or region after: China Address before: 471000 Building 1, northwest corner of the intersection of Keji Avenue and Zhuge Avenue, Yibin District, Luoyang City, Henan Province Patentee before: Luoyang Landi Vacuum Glass Technology Co.,Ltd. Country or region before: China |