CN101345176A - Fast powder coating technique for light tube of screw type energy-saving lamp - Google Patents
Fast powder coating technique for light tube of screw type energy-saving lamp Download PDFInfo
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- CN101345176A CN101345176A CNA2008100716088A CN200810071608A CN101345176A CN 101345176 A CN101345176 A CN 101345176A CN A2008100716088 A CNA2008100716088 A CN A2008100716088A CN 200810071608 A CN200810071608 A CN 200810071608A CN 101345176 A CN101345176 A CN 101345176A
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Abstract
The invention provides a quick coating process used for a spiral energy-saving lamp tube, comprising the steps of powder injection, powder pouring and drying and curing; in the drying and curing step, the axle wire of the blowing pipe mouth of a blowing device and the axle wire of a glass pipe mouth of a lamp tube have a certain angle Theta; furthermore, high-pressure wind is blown to the outside from the pipe mouth position of the glass pipe of the lamp tube, wherein, Theta is more than 0 and not more than 90; furthermore, the wind pressure of the wind source of the high-pressure wind is 1-8kg/cm<2>. The coating process of the invention can blow away the powder slurry piled at the pipe mouth, leads the residual powder slurry in the lamp tube to rapidly flow out of the lamp tube, forms a negative pressure at the pipe mouth of the glass pipe of the lamp tube, leads the vapour in the lamp tube to be sucked out, thus quickly realizing the drying and curing of the powder slurry of the lamp tube of the full-spiral and half-spiral energy-saving lamp; therefore, the coating process has important significance on improving the costing efficiency, reducing the production cost, improving the powder layer quality and on the development of the energy-saving lamp industry.
Description
[technical field]
The present invention relates to a kind of production technology of electricity-saving lamp, particularly a kind of fast powder coating technique for light tube of screw type energy-saving lamp.
[background technology]
Electricity-saving lamp generally is divided into two classes: U type (as 2U, 3U) and spiral type (the foot screw type being arranged as full spiral type, semispiral type or title), wherein, helical type energy conserving lamp is because the revolution of glass tube inner passage is tortuous, therefore, itself and U type electricity-saving lamp ratio exist coating process efficient lower, the powder layer thickness skewness of fluorescent tube, and the accumulated powder current mark is arranged, produce shading, reduced the shortcoming of luminous flux output.
The light tube of screw type energy-saving lamp coating process comprises following 3 steps at present: 1, annotate powder, promptly the fluorescent material powder is starched from the glass tube mouth of pipe of fluorescent tube and be injected into glass tube inside; 2, fall powder, promptly the fluorescent material powder of glass tube inside slurry is coated to the glass tube inner surface of fluorescent tube after unnecessary fluorescent material powder slurry discharge from the glass tube mouth of pipe of fluorescent tube; 3, dry solidification, promptly mouth of blast pipe is dried to the glass tube the inside towards the glass tube mouth of pipe position of fluorescent tube, steam in the glass tube of fluorescent tube is blown out outside the fluorescent tube, simultaneously fluorescent tube is heated, make the water evaporates of fluorescent material powder slurry of the glass tube inner surface of fluorescent tube, till the bisque that the inner surface of the glass tube of fluorescent tube applies is dried to curing.The light tube of screw type energy-saving lamp coating process is divided into perfusion and quantitatively annotates the powder method at present, described perfusion is in when falling the powder, make the axis of fluorescent tube perpendicular to the ground, and the glass tube mouth of pipe of fluorescent tube down, the unnecessary powder slurry that injects in the fluorescent tube flows out outside the fluorescent tube by action of gravity naturally, and quantitatively annotate the powder method is to annotate powder and when falling the powder, make the axis of fluorescent tube parallel to the ground or have angle, inject quantitative powder slurry, in the positive and negative rotation of fluorescent tube, finish on the glass tube inner surface that the powder slurry is coated in fluorescent tube and and flow out outside the fluorescent tube naturally by action of gravity with unnecessary powder slurry.
Till settled the present, no matter be perfusion or the coating process of quantitatively annotating the powder method, in the dry solidification step, be simultaneously to the fluorescent tube heating, as shown in Figure 1a, be the glass tube mouth of pipe 22 ' direction that blowing device 1 ' is faced semispiral type energy-saving lamp tube 2 ', in the glass tube of fluorescent tube 2 ', dry.For another example shown in Fig. 1 b, blowing device 1 ' is faced the glass tube mouth of pipe 42 ' direction of full light tube of screw type energy-saving lamp 4 ', blowing in the glass tube of fluorescent tube 4 '.
Because the used fluorescent material powder slurry of coating process mainly is made up of fluorescent material, water, glue etc.In the above-mentioned process of falling the powder, it is outward to flow out naturally by action of gravity that the powder slurry is discharged fluorescent tube, and the packing phenomenon of powder slurry at fluorescent tube mouth of pipe place delays the rate of outflow of powder slurry; The flowing velocity of powder slurry is relevant with the temperature of powder slurry, and it is the fastest to flow when the powder slurry is heated to 60～90 ℃, and vapor evaporated is maximum; The glass tube internal steam of fluorescent tube is discharged fast more, and the glass tube bisque of fluorescent tube solidifies fast more, and powder layer thickness is even more.Therefore, in the dry solidification technical process, mouth of blast pipe is dried to the glass tube the inside towards the glass tube mouth of pipe position of fluorescent tube,, will dispel near the powder slurry that flows the mouth of pipe, cause shadow stripe or trace, so blast can only be little if blast is big; When simultaneously fluorescent tube being heated, because the blowing blast is little, it is also few to blow out vapour quantity, if heat, the steam that is evaporated in a large number of generation can't in time be discharged outside the glass tube, and the glass tube interior humidity of fluorescent tube is very high, the powder slurry flows easily, the powder that the glass tube mouth of pipe place of fluorescent tube then can occur is starched when also not draining off, and other position bisques of the glass tube of fluorescent tube are thin partially or do not have the powder printing opacity, so heating-up temperature is determined to satisfy to discharge the principle of heating how much steam how much steam just produces.Why electricity-saving lamp manufacturing industry that Here it is adopts low temperature, little air quantity at present in dusting, dry solidification technology guarantees the reason of fluorescent tube dusting bisque quality for a long time.Yet, so just can reduce dusting efficient widely, increased cost, in the industry the general notes powder captain degree that uses at 5～10 meters, about 5～8 minutes of the dusting time of each fluorescent tube.Therefore invent a kind of fast powder coating technique, to improve dusting efficient, to reduce production costs, improve the bisque quality significant to the electricity-saving lamp industry development.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of fast powder coating technique for light tube of screw type energy-saving lamp, the dusting process time of fluorescent tube is shortened, improved efficient, has reduced cost, improved the bisque quality of helical type lamp.
The present invention is achieved in that a kind of fast powder coating technique for light tube of screw type energy-saving lamp, comprises annotating powder, falling powder, three steps of dry solidification, and wherein, described notes powder step is the fluorescent material powder to be starched from the glass tube mouth of pipe of fluorescent tube be injected into glass tube inside; The described step of falling the powder is that unnecessary fluorescent material powder slurry was discharged from the glass tube mouth of pipe of fluorescent tube after the fluorescent material powder of glass tube inside slurry was coated to the glass tube inner surface of fluorescent tube; In described dry solidification step, be the angled θ in axis with the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube, and towards glass tube mouth of pipe position top blast high-pressure blast outside the mouth of pipe of fluorescent tube, this angle is 0＜θ≤90 °, and the wind regime blast of this high-pressure blast is 1～8kg/cm
2
Wherein, in described dry solidification step, simultaneously described fluorescent tube is carried out heat, make the tube wall temperature reach 100～160 ℃.
Wherein, the blower quantity of this blowing device is at least 1, the diameter of mouth of blast pipe is 3～15mm, and the axis intersection point of the glass tube mouth of pipe of the axis of this mouth of blast pipe and described fluorescent tube is 3～100mm from the distance of this mouth of blast pipe, is 1.5～100mm from the distance of the glass tube mouth of pipe of this fluorescent tube.
Above-mentioned technology technical scheme further is:
The axis angulation θ of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube=45 °; The wind regime blast of this high-pressure blast is 3kg/cm
2The tube wall temperature reaches 130 ℃; The diameter of mouth of blast pipe is 4mm; The axis intersection point of the glass tube mouth of pipe of the axis of mouth of blast pipe and described fluorescent tube is 20mm from the distance of this mouth of blast pipe; Distance from the glass tube mouth of pipe of this fluorescent tube is 15mm.
The axis angulation θ of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube=85 °; The wind regime blast of this high-pressure blast is 2.5kg/cm
2The tube wall temperature reaches 150 ℃; The diameter of mouth of blast pipe is 5mm; The axis intersection point of the glass tube mouth of pipe of the axis of mouth of blast pipe and described fluorescent tube is 10mm from the distance of this mouth of blast pipe; Distance from the glass tube mouth of pipe of this fluorescent tube is 5mm.
The axis angulation θ of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube=5 °; The wind regime blast of this high-pressure blast is 6kg/cm
2The tube wall temperature reaches 120 ℃; The diameter of mouth of blast pipe is 10mm; The axis intersection point of the glass tube mouth of pipe of the axis of mouth of blast pipe and described fluorescent tube is 80mm from the distance of this mouth of blast pipe; Distance from the glass tube mouth of pipe of this fluorescent tube is 90mm.
A kind of fast powder coating technique for light tube of screw type energy-saving lamp provided by the present invention, has following beneficial effect: no matter be perfusion or the coating process of quantitatively annotating the powder method, because after the end of falling the powder, promptly after the powder slurry flows out from the fluorescent tube mouth of pipe, next in described dry solidification step, be that the axis of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube is angled, and, simultaneously fluorescent tube is carried out heat towards glass tube mouth of pipe position top blast high-pressure blast outside the mouth of pipe of fluorescent tube.Like this, high-pressure blast will blow the powder slurry of piling up at fluorescent tube mouth of pipe place off, the interior unnecessary powder slurry of fluorescent tube can be flowed out outside the fluorescent tube rapidly, and form negative pressure at the glass tube mouth of pipe place of fluorescent tube, and the steam of the glass tube inside of fluorescent tube is sucked out; Owing in the process of dry solidification, simultaneously fluorescent tube is heated, like this, the blast of high-pressure blast is high more, the negative pressure that mouth of pipe place produces is low more, the effect of suction vapour is good more, the temperature of fluorescent tube just can heat highly more, and the steam of the glass tube inside of fluorescent tube is sucked out many more, and the speed of the bisque dry solidification that the inner surface of the glass tube of fluorescent tube applies is fast more.So a kind of fast powder coating technique of the present invention, can in 60 seconds, finish fluorescent tube the notes powder, fall powder, dry solidification, and original coating process needs 5-8 minute, therefore greatly improve dusting efficient, reduce production costs, the powder layer thickness of helical type lamp is evenly distributed, no accumulated powder current mark, the bisque quality reaches the level of U type fluorescent tube, thereby has improved luminous flux output.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 a and 1b are the dry solidification process schematic representations of prior art half, full light tube of screw type energy-saving lamp.
Fig. 2 is the schematic diagram of the glass tube mouth of pipe relative position of the mouth of blast pipe of blowing device of the present invention and fluorescent tube.
Fig. 3 is the schematic diagram that the present invention is directed to the dry solidification technology of semispiral type energy-saving lamp tube.
Fig. 4 is the schematic diagram that the present invention is directed to the dry solidification technology of full light tube of screw type energy-saving lamp.
[embodiment]
A kind of fast powder coating technique for light tube of screw type energy-saving lamp of the present invention comprises and annotates powder, falls powder, three steps of dry solidification that wherein, described notes powder step is the fluorescent material powder to be starched from the glass tube mouth of pipe of fluorescent tube be injected into glass tube inside; The described step of falling the powder is after the fluorescent material powder of glass tube inside slurry is coated to the glass tube inner surface of fluorescent tube, unnecessary fluorescent material powder slurry to be discharged from the glass tube mouth of pipe of fluorescent tube; As shown in Figure 2, no matter be perfusion or the coating process of quantitatively annotating the powder method, in described dry solidification step, be that the axis 13 of the mouth of blast pipe 12 of blowing device 1 is angled with the axis 23 (43) of one of them glass tube mouth of pipe 22 (42) of fluorescent tube 2 (4), and outwards blow high-pressure blast towards the glass tube mouth of pipe 22 (42) positions of fluorescent tube 2 (4), produce negative pressure at mouth of pipe place, the steam of powder slurry in the glass tube of sucking-off fluorescent tube, and forming the fluorescent material bisque at the inner surface of tube.This angle is 0＜θ≤90 °, and the wind regime blast of this high-pressure blast is 1～8kg/cm
2This step also can be carried out heat to described fluorescent tube 2 (4) simultaneously, make fluorescent tube 2 (4) tube wall temperatures reach 100～160 ℃, and adjust the blowing device 1 of this high-pressure blast, make blower quantity be at least 1, the diameter of mouth of blast pipe 12 is 3～15mm, and the axis 13 of this mouth of blast pipe 12 is 3～100mm with axis 23 (43) the intersection point O of the glass tube mouth of pipe 22 (42) of described fluorescent tube 2 (4) from the distance L 1 of this mouth of blast pipe 12, is 1.5～100mm from the distance L 2 of the glass tube mouth of pipe 22 (42) of this fluorescent tube 2 (4).
, be the schematic diagram that the present invention is directed to the dry solidification technology of semispiral type energy-saving lamp tube please in conjunction with Fig. 2 and shown in Figure 3.This curing and drying steps are outwards to blow high-pressure blast with 23 angled θ=45, axis of the axis 13 of the mouth of blast pipe 12 of blowing device 1 and semispiral type energy-saving lamp tube 2 one of them glass tube mouth of pipe 22 ° and towards the glass tube mouth of pipe 22 positions of fluorescent tube 2, the flow direction of high-pressure blast gas is shown in the 1 front end solid arrow of blowing device among Fig. 3, and the wind regime blast of high-pressure blast is 3kg/cm
2, the diameter of the mouth of blast pipe 12 of this blowing device 1 is 4mm, and the axis 23 intersection point O of the axis 13 of this mouth of blast pipe 12 and the glass tube mouth of pipe of fluorescent tube are 20mm from the distance L 1 of this mouth of blast pipe 12, is 15mm from the distance L 2 of the glass tube mouth of pipe of this fluorescent tube; Around fluorescent tube 2 sides, establish simultaneously a drying unit 3 in addition,, make fluorescent tube 2 tube wall temperatures reach 130 ℃ fluorescent tube 2 high temperature in addition.Like this, high-pressure blast can cause fluorescent tube 2 internal cause high temperature that flowing to the powder slurry of piling up at the glass tube mouth of pipe 22 places fast blows off, and in the glass tube mouth of pipe 22 places formation negative pressure, make the steam in the fluorescent tube 2 can flow out outside the fluorescent tube 2 rapidly, dotted arrow among Fig. 3 on the fluorescent tube 2 is represented the flow direction of fluorescent tube 2 internal gas, thereby realizes the curing and the drying of powder slurry fast.
In the foregoing description, with 23 angled θ=85, axis of the axis 13 of the mouth of blast pipe 12 of blowing device 1 and the complete wherein arbitrary glass tube mouth of pipe 22 of light tube of screw type energy-saving lamp 2 °, the wind regime blast of high-pressure blast is 2.5kg/cm
2, the diameter of mouth of blast pipe 12 is 5mm, and the axis intersection point of the glass tube mouth of pipe 22 of the axis of this mouth of blast pipe 12 and fluorescent tube 2 is 10mm from the distance L 1 of this mouth of blast pipe 12, is 5mm from the distance L 2 of the glass tube mouth of pipe 22 of this fluorescent tube 2; Drying unit 3 makes fluorescent tube 2 tube wall temperatures reach 150 ℃ simultaneously.
Please in conjunction with Fig. 2 and shown in Figure 4, be the dry solidification technology that the present invention is directed to full light tube of screw type energy-saving lamp again.This dry solidification step is outwards to blow high-pressure blast with 43 angled θ=5, axis of the axis 13 of the mouth of blast pipe 12 of blowing device 1 and the complete wherein arbitrary glass tube mouth of pipe 42 of light tube of screw type energy-saving lamp 4 ° and towards the glass tube mouth of pipe 42 positions of fluorescent tube 4, the flow direction of high-pressure blast gas is shown in the 1 front end solid arrow of blowing device among Fig. 4, and the wind regime blast of high-pressure blast is 6kg/cm
2, the diameter of mouth of blast pipe 12 is 10mm, and the axis 43 intersection point O of the axis 13 of this mouth of blast pipe 12 and the glass tube mouth of pipe 42 of fluorescent tube 4 are 80mm from the distance L 1 of this mouth of blast pipe 12, is 90mm from the distance L 2 of the glass tube mouth of pipe 22 of this fluorescent tube 2; Around fluorescent tube 4 sides, establish simultaneously a drying unit 3 in addition,, make fluorescent tube 4 tube wall temperatures reach 120 ℃ fluorescent tube 4 high temperature in addition.High-pressure blast can cause fluorescent tube 4 internal cause high temperature that flowing to the powder slurry of piling up at the glass tube mouth of pipe 42 places fast blows off, and in the glass tube mouth of pipe 42 places formation negative pressure, make the steam in the fluorescent tube 4 can flow out outside the fluorescent tube 4 rapidly, dotted arrow among Fig. 4 on the fluorescent tube 4 is represented the flow direction of fluorescent tube 4 internal gas, thereby realizes the curing and the drying of powder slurry fast.
To sum up, the present invention abandons low temperature, long-time, little air quantity is aimed at the dry solidification technology of the glass tube mouth of pipe of fluorescent tube to the inner blowing of glass tube, the glass tube mouth of pipe of using instead with fluorescent tube has angle, and towards glass tube mouth of pipe position top blast high-pressure blast outside the mouth of pipe of fluorescent tube, simultaneously to the fluorescent tube heat, the powder slurry that mouth of pipe place can be piled up blows off, and in mouth of pipe place formation negative pressure, the interior unnecessary powder slurry of fluorescent tube can be flowed out rapidly outside the fluorescent tube, the steam of quick sucking-off bisque powder slurry, thus realize dry solidification complete, semispiral type energy-saving lamp tube bisque fast.To improving dusting efficient, reducing production costs, improve bisque quality and significant to the electricity-saving lamp industry development.
Claims (6)
1, a kind of fast powder coating technique for light tube of screw type energy-saving lamp comprises and annotates powder, falls powder, three steps of dry solidification, wherein,
Described notes powder step is the fluorescent material powder to be starched from the glass tube mouth of pipe of fluorescent tube be injected into glass tube inside;
The described step of falling the powder is after the fluorescent material powder of glass tube inside slurry is coated to the glass tube inner surface of fluorescent tube, unnecessary fluorescent material powder slurry to be discharged from the glass tube mouth of pipe of fluorescent tube;
It is characterized in that:
In described dry solidification step, be with the axis of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube θ at angle, and towards glass tube mouth of pipe position top blast high-pressure blast outside the mouth of pipe of fluorescent tube, this angle is 0＜θ≤90 °, and the wind regime blast of this high-pressure blast is 1～8kg/cm
2
2, a kind of fast powder coating technique for light tube of screw type energy-saving lamp according to claim 1 is characterized in that: in described dry solidification step, simultaneously described fluorescent tube is carried out heat, make the tube wall temperature reach 100～160 ℃.
3, a kind of fast powder coating technique for light tube of screw type energy-saving lamp according to claim 2, it is characterized in that: the blower quantity of this blowing device is at least 1, the diameter of mouth of blast pipe is 3～15mm, and the axis intersection point of the glass tube mouth of pipe of the axis of this mouth of blast pipe and described fluorescent tube is 3～100mm from the distance of this mouth of blast pipe, is 1.5～100mm from the distance of the glass tube mouth of pipe of this fluorescent tube.
4, a kind of fast powder coating technique for light tube of screw type energy-saving lamp according to claim 3 is characterized in that: the axis angulation θ of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube=45 °; The wind regime blast of this high-pressure blast is 3kg/cm
2The tube wall temperature reaches 130 ℃; The diameter of mouth of blast pipe is 4mm; The axis intersection point of the glass tube mouth of pipe of the axis of mouth of blast pipe and described fluorescent tube is 20mm from the distance of this mouth of blast pipe; Distance from the glass tube mouth of pipe of this fluorescent tube is 15mm.
5, a kind of fast powder coating technique for light tube of screw type energy-saving lamp according to claim 3 is characterized in that: the axis angulation θ of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube=85 °; The wind regime blast of this high-pressure blast is 2.5kg/cm
2The tube wall temperature reaches 150 ℃; The diameter of mouth of blast pipe is 5mm; The axis intersection point of the glass tube mouth of pipe of the axis of mouth of blast pipe and described fluorescent tube is 10mm from the distance of this mouth of blast pipe; Distance from the glass tube mouth of pipe of this fluorescent tube is 5mm.
6, a kind of fast powder coating technique for light tube of screw type energy-saving lamp according to claim 3 is characterized in that: the axis angulation θ of the glass tube mouth of pipe of the axis of the mouth of pipe of the blower of blowing device and fluorescent tube=5 °; The wind regime blast of this high-pressure blast is 6kg/cm
2The tube wall temperature reaches 120 ℃; The diameter of mouth of blast pipe is 10mm; The axis intersection point of the glass tube mouth of pipe of the axis of mouth of blast pipe and described fluorescent tube is 80mm from the distance of this mouth of blast pipe; Distance from the glass tube mouth of pipe of this fluorescent tube is 90mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100716088A CN100568440C (en) | 2008-08-18 | 2008-08-18 | A kind of fast powder coating technique for light tube of screw type energy-saving lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100716088A CN100568440C (en) | 2008-08-18 | 2008-08-18 | A kind of fast powder coating technique for light tube of screw type energy-saving lamp |
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| Publication Number | Publication Date |
|---|---|
| CN101345176A true CN101345176A (en) | 2009-01-14 |
| CN100568440C CN100568440C (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100716088A Expired - Fee Related CN100568440C (en) | 2008-08-18 | 2008-08-18 | A kind of fast powder coating technique for light tube of screw type energy-saving lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037040A (en) * | 2014-05-09 | 2014-09-10 | 浙江长兴昌盛新光源有限公司 | Spiral lamp tube accumulated-powder-free powder coating process |
| CN105551912A (en) * | 2015-12-21 | 2016-05-04 | 陈艳 | Internal coating technology for helical energy-saving lamp tube |
-
2008
- 2008-08-18 CN CNB2008100716088A patent/CN100568440C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037040A (en) * | 2014-05-09 | 2014-09-10 | 浙江长兴昌盛新光源有限公司 | Spiral lamp tube accumulated-powder-free powder coating process |
| CN105551912A (en) * | 2015-12-21 | 2016-05-04 | 陈艳 | Internal coating technology for helical energy-saving lamp tube |
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| Publication number | Publication date |
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| CN100568440C (en) | 2009-12-09 |
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Owner name: FUJIAN YONGDEJI LIGHT INDUSTRY CO., LTD. Free format text: FORMER OWNER: FUJIAN PROVINCE YONGDEJI GROUP CO., LTD. Effective date: 20100305 |
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Effective date of registration: 20100305 Address after: Pillow Feng Industrial Zone, Minhou County town of Fuzhou Xiang Qian 350000 cities in Fujian Province Patentee after: Fujian YDJ Light Co., Ltd. Address before: Pillow Feng Industrial Zone, Minhou County town of Fuzhou Xiang Qian 350102 cities in Fujian Province Patentee before: Fujian Yong De Ji Group Co., Ltd. |
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