CN107845562A - Anode construction for short arc mercury xenon lamp - Google Patents
Anode construction for short arc mercury xenon lamp Download PDFInfo
- Publication number
- CN107845562A CN107845562A CN201711286594.7A CN201711286594A CN107845562A CN 107845562 A CN107845562 A CN 107845562A CN 201711286594 A CN201711286594 A CN 201711286594A CN 107845562 A CN107845562 A CN 107845562A
- Authority
- CN
- China
- Prior art keywords
- radiating
- radiating groove
- xenon lamp
- mercury xenon
- short arc
- 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.)
- Granted
Links
- VSQYNPJPULBZKU-UHFFFAOYSA-N mercury xenon Chemical compound [Xe].[Hg] VSQYNPJPULBZKU-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 230000017525 heat dissipation Effects 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
- H01J61/523—Heating or cooling particular parts of the lamp
- H01J61/526—Heating or cooling particular parts of the lamp heating or cooling of electrodes
Landscapes
- Discharge Lamp (AREA)
Abstract
The invention discloses a kind of anode construction for short arc mercury xenon lamp；Belong to mercury xenon lamp technical field；Technical points include the body in cylinder, and the body is from top to bottom sequentially made up of round platform portion, radiating part, auxiliary heat dissipation support and supporting inverted round stage portion；The round platform subordinate end external diameter is identical with radiating part external diameter；The external diameter of the radiating part 0.4 0.8mm smaller than the external diameter of auxiliary heat dissipation support；The total height of the round platform portion and radiating part and the total height ratio in auxiliary heat dissipation support and supporting inverted round stage portion are 1：1.2‑1.4；Axially spaced on the radiating part outer wall to be evenly equipped with some first annular radiating grooves, each first annular radiating groove is circumferentially disposed along radiating part；The present invention is intended to provide a kind of rational in infrastructure, intensity is higher and radiating effect is reasonably used for the anode construction of short arc mercury xenon lamp；For mercury xenon lamp.
Description
Technical field
The present invention relates to a kind of short arc mercury xenon lamp part, more specifically, more particularly to it is a kind of for short arc mercury xenon lamp
Anode construction.
Background technology
Anode is high pressure triggering burning point of the short arc mercury xenon lamp in lighting, when fluorescent tube normally lights operation, temperature of anode
Reach 2500~3000 DEG C.Anode still suffers from the heavy current surge from negative electrode, it is necessary to there is stronger bearing strength simultaneously, with
Exempt to change under HTHP power, influence the service life of light fixture.Because temperature of anode is high, to ensure that its long-time has
The work of effect ground in anode surface, it is necessary to set radiator structure to increase scattered effect.But find in an experiment, anode surface is thin
The change of micro-structural, radiating effect, anode intensity can be had a strong impact on and then lamp life obvious deviation is occurred.
The content of the invention
It is an object of the invention to for above-mentioned the deficiencies in the prior art, there is provided one kind is rational in infrastructure, intensity is higher and scattered
Thermal effect is reasonably used for the anode construction of short arc mercury xenon lamp.
The technical proposal of the invention is realized in this way：A kind of anode construction for short arc mercury xenon lamp, including in cylinder
The body of shape, it is characterised in that the body is from top to bottom sequentially by round platform portion, radiating part, auxiliary heat dissipation support and supporting
Inverted round stage portion is formed；The round platform subordinate end external diameter is identical with radiating part external diameter；The external diameter of the radiating part is than auxiliary heat dissipation branch
The small 0.4-0.8mm of external diameter of bearing portion；The total height of the round platform portion and radiating part and auxiliary heat dissipation support and supporting inverted round stage
The total height ratio in portion is 1：1.2-1.4；
It is axially spaced on the radiating part outer wall to be evenly equipped with some first annular radiating grooves, each first annular radiating groove edge
Radiating part is circumferentially disposed.
In a kind of above-mentioned anode construction for short arc mercury xenon lamp, the first annular radiating groove is V-shaped groove；This first
The width in circular radiating channel opening portion is 95 μm -105 μm, and the depth of bottom to opening portion is 280 μm -320 μm；Two neighboring
Spacing between one circular radiating groove is 90 μm -110 μm.
In a kind of above-mentioned anode construction for short arc mercury xenon lamp, the first annular radiating trench bottom is fillet knot
Structure, radius of circle where the fillet are 20 μm -30 μm；First annular radiating groove opening portion and the contact site of radiating part outer wall are fillet
Structure, radius of circle where the fillet are 60 μm -70 μm.
In a kind of above-mentioned anode construction for short arc mercury xenon lamp, on the auxiliary heat dissipation support outer wall vertically between
Every being evenly equipped with some second circular radiating grooves, each second circular radiating groove is circumferentially disposed along auxiliary heat dissipation support.
Preferably, the second circular radiating groove is U-lag；The width in the second circular radiating channel opening portion be 540 μm-
560 μm, the depth of bottom to opening portion is 280 μm -320 μm；Spacing between two neighboring second circular radiating groove is 600 μ
m-800μm。
Preferably, the contact site of the second circular radiating groove bottom and side wall is fillet structure, circle half where the fillet
Footpath is 100 μm -120 μm；Second circular radiating channel opening portion and the contact site of auxiliary heat dissipation support outer wall are fillet structure, should
Radius of circle where fillet is 100 μm -120 μm.
It is axially spaced equal on outer wall in the middle part of the round platform portion in a kind of above-mentioned anode construction for short arc mercury xenon lamp
Some 3rd circular radiating grooves are furnished with, each 3rd circular radiating groove is circumferentially disposed along round platform portion.
Preferably, the 3rd circular radiating groove is V-shaped groove；The width in the 3rd circular radiating channel opening portion be 80 μm-
90 μm, the depth of bottom to opening portion is 200 μm -220 μm；Spacing between two neighboring 3rd shape radiating groove for 110 μm-
130μm。
Preferably, the 3rd circular radiating trench bottom is fillet structure, and radius of circle where the fillet is 20 μm -30 μm；
The contact site of 3rd circular radiating channel opening portion and round platform portion outer wall is fillet structure, and radius of circle where the fillet is 60 μm of -70 μ
m。
In a kind of above-mentioned anode construction for short arc mercury xenon lamp, lead between radiating part and the auxiliary heat dissipation support
The connection of connection round platform is crossed, the angle that outer wall and the horizontal plane of the connection round platform are formed is that α is 130-140 °, the connection round platform
Height H is 1.2-1.8mm.
After the present invention uses said structure, by the radiating part and auxiliary heat dissipation support that set various outer diameter so that auxiliary
Help radiating support that there is higher intensity, experiment is found, when auxiliary heat dissipation support is bigger 0.4-0.8mm than radiating part external diameter
When, while intensity significantly improves, will not dramatically increase again product weight and into.When anode is made it is isometrical when, if outside
Footpath is identical with radiating part, then low strength and radiating effect is poor；When anode external diameter is identical with auxiliary heat dissipation support, then light fixture
Life-span is without significant change, but product weight increases and cost significantly improves, expensive because anode is tungsten material.
The structure of 3rd circular radiating groove, while radiating, also with a very important effect, that is, increase arc light
Stability, avoid arc light from being occurred the mobile phenomenon of floating by the influence of high velocity air, reduce anode to greatest extent
Loss, delay the speed that anode head deforms.
Further, in order that the life-span of light fixture and stability further improve, creatively by first outside radiating part
The structure design of circular radiating groove obtains different from the second circular radiating slot structure outside auxiliary heat dissipation support.Specifically, first
The v-shaped structure of circular radiating groove combines its micro groove structure, and both proof strength, can suitably radiate again, make anode working temperature
Maintain 2600-2800 DEG C；And the U-shaped structure of the second circular radiating groove coordinates deep groove structure, on the basis of larger external diameter, together
Sample has higher-strength, but radiating effect is significantly better than radiating part.Radiating part coordinates with auxiliary heat dissipation support, both ensure that sun
The intensity of pole, the temperature of anode is set integrally to control in the reasonable scope again.
Meanwhile the 3rd circular radiating groove structure, can reduce anode triggering burning point position compressive deformation, reduce damage
Consumption.First, second and third circular radiating groove cooperates, and each radiating groove from top to bottom gradually increases contact area, and radiating efficiency is gradual
Improve so that radiating relies primarily on auxiliary heat dissipation support, and temperature slowly transmits change at round platform portion, radiating part, is ensureing to dissipate
Make fluorescent tube interior air-flow stable operation in the case of heat, strengthen burning arc stability, alleviate light intensity attenuation, make so as to postpone fluorescent tube
Use the life-span.
Brief description of the drawings
The present invention is described in further detail for embodiment in below in conjunction with the accompanying drawings, but does not form to the present invention's
Any restrictions.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the close-up schematic view at A in Fig. 1；
Fig. 3 is the close-up schematic view at B in Fig. 1；
Fig. 4 is the close-up schematic view at C in Fig. 1；
Fig. 5 is the close-up schematic view at D in Fig. 1.
In figure：Body 1, round platform portion 2, the 3rd circular radiating groove 2a, radiating part 3, first annular radiating groove 3a, auxiliary heat dissipation
Support 4, the second circular radiating groove 4a, supporting inverted round stage portion 5, connection round platform 6.
Embodiment
Refering to shown in Fig. 1 to Fig. 5, a kind of anode construction for short arc mercury xenon lamp of the invention, including in cylinder
Body 1, the body 1 is from top to bottom sequentially by round platform portion 2, radiating part 3, auxiliary heat dissipation support 4 and the structure of supporting inverted round stage portion 5
Into；The lower end external diameter of round platform portion 2 is identical with the external diameter of radiating part 3；The external diameter of the radiating part 3 is than auxiliary heat dissipation support 4
The small 0.4-0.8mm of external diameter；The round platform portion 2 and the total height and auxiliary heat dissipation support 4 and supporting inverted round stage portion 5 of radiating part 3
Total height ratio be 1：1.2-1.4.
In order that body construction is compacter, while reduces the excessive friction with gas in glass bulb, in radiating part 3 and auxiliary
Connected between radiating support 4 by connecting round platform 6, the angle that outer wall and the horizontal plane of the connection round platform 6 are formed is that α is
130-140 °, the height H of the connection round platform 6 is 1.2-1.8mm.The angle of round platform outer wall is connected, can be provided with for radiating part
The support of power, when being impacted by negative electrode high current, it can divide and put forward a part of pressure while equably transit to pressure auxiliary
Help radiating support.
It is axially spaced on the outer wall of radiating part 3 to be evenly equipped with some first annular radiating groove 3a, each first annular radiating groove
3a is circumferentially disposed along radiating part 3.Preferably, the first annular radiating groove 3a is V-shaped groove；The first annular radiating groove 3a openings
The width in portion is 95 μm -105 μm, and the depth of bottom to opening portion is 280 μm -320 μm；Two neighboring first annular radiating groove 3a
Between spacing be 90 μm -110 μm.Meanwhile the first annular radiating groove 3a bottoms are fillet structure, circle half where the fillet
Footpath is 20 μm -30 μm；First annular radiating groove 3a opening portions and the contact site of the outer wall of radiating part 3 are fillet structure, the fillet institute
It it is 60 μm -70 μm in radius of circle.Fillet design, the path of smoothness can be provided for the high-speed gas in glass bulb, avoided and body
Generation severe friction, causes body temperature rising and light fixture light intensity dies down.Found by contrast experiment, first annular radiating groove
V-shaped structure coordinates the larger spacing between two neighboring first annular radiating groove again, then coordinates accurate parameter, compared to existing V-arrangement
0 spacing forms inverted V-shaped bulge loop or small pitch structure between groove so that radiating part has enough intensity, while has concurrently suitably
Radiating effect.And if using U-shaped structure, then intensity can reduce, and radiating effect is excessively good and causes energy loss to increase.
It is correspondingly, axially spaced on the outer wall of auxiliary heat dissipation support 4 to be evenly equipped with some second circular radiating groove 4a,
Each second circular radiating groove 4a is circumferentially disposed along auxiliary heat dissipation support.The second circular radiating groove 4a is U-lag；This second
The width of circular radiating groove 4a opening portions is 540 μm -560 μm, and the depth of bottom to opening portion is 280 μm -320 μm；Adjacent two
Spacing between individual second circular radiating groove 3a is 600 μm -800 μm.Preferably, the second circular radiating groove 4a bottom surfaces and side
The contact site of wall is fillet structure, and radius of circle where the fillet is 100 μm -120 μm；Second circular radiating groove 4a opening portions with it is auxiliary
The contact site for helping the radiating outer wall of support 4 is fillet structure, and radius of circle where the fillet is 100 μm -120 μm.Second annular dissipates
The U-shaped structure of heat channel, providing larger area of dissipation, while improving radiating effect, because its external diameter is more than radiating part, and the
The depth of second ring radiating groove is less than the increased wall thickness of institute so that its intensity is still higher than radiating part, can effectively support
Radiating part.
Further, it is axially spaced on the middle part outer wall of round platform portion 2 to be evenly equipped with some 3rd circular radiating groove 2a, each
Three circular radiating groove 2a are circumferentially disposed along round platform portion 2.The 3rd circular radiating groove 2a is V-shaped groove；3rd circular radiating groove
The width of 2a opening portions is 80 μm -90 μm, and the depth of bottom to opening portion is 200 μm -220 μm；Two neighboring 3rd annular dissipates
Spacing between heat channel 2a is 110 μm -130 μm.Preferably, the 3rd circular radiating groove 2a bottoms are fillet structure, the circle
Radius of circle where angle is 20 μm -30 μm；3rd circular radiating groove 2a opening portions and the contact site of the outer wall of round platform portion 2 are fillet knot
Structure, radius of circle where the fillet are 60 μm -70 μm.The structure of 3rd circular radiating groove, the stability of arc light can be increased, avoid arc
Light is influenceed by high velocity air and the mobile phenomenon of floating occurs, reduces the loss of anode to greatest extent, becomes anode head
The speed of shape delays.
Embodiment provided above is the better embodiment of the present invention, is only used for the convenient explanation present invention, not to this hair
It is bright to make any formal limitation, any those of ordinary skill in the art, if putting forward skill not departing from the present invention
In the range of art feature, using the equivalent embodiment for locally changing or modifying made by disclosed technology contents, and
Without departing from the technical feature content of the present invention, in the range of still falling within the technology of the present invention feature.
Claims (10)
1. a kind of anode construction for short arc mercury xenon lamp, including the body (1) in cylinder, it is characterised in that the body
(1) from top to bottom sequentially it is made up of round platform portion (2), radiating part (3), auxiliary heat dissipation support (4) and supporting inverted round stage portion (5)；
Round platform portion (2) the lower end external diameter is identical with radiating part (3) external diameter；The external diameter of the radiating part (3) is than auxiliary heat dissipation support
(4) the small 0.4-0.8mm of external diameter；The round platform portion (2) and the total height and auxiliary heat dissipation support (4) and branch of radiating part (3)
The total height ratio for holding inverted round stage portion (5) is 1：1.2-1.4；
It is axially spaced on radiating part (3) outer wall to be evenly equipped with some first annular radiating grooves (3a), each first annular radiating
Groove (3a) is circumferentially disposed along radiating part (3).
2. a kind of anode construction for short arc mercury xenon lamp according to claim 1, it is characterised in that described first annular
Radiating groove (3a) is V-shaped groove；The width of first annular radiating groove (3a) opening portion is 95 μm -105 μm, bottom to opening portion
Depth is 280 μm -320 μm；Spacing between two neighboring first annular radiating groove (3a) is 90 μm -110 μm.
3. a kind of anode construction for short arc mercury xenon lamp according to claim 1, it is characterised in that described first annular
Radiating groove (3a) bottom is fillet structure, and radius of circle where the fillet is 20 μm -30 μm；First annular radiating groove (3a) opening portion
Contact site with radiating part (3) outer wall is fillet structure, and radius of circle where the fillet is 60 μm -70 μm.
A kind of 4. anode construction for short arc mercury xenon lamp according to claim 1, it is characterised in that the auxiliary heat dissipation
It is axially spaced on support (4) outer wall to be evenly equipped with some second circular radiating grooves (4a), each second circular radiating groove (4a) edge
Auxiliary heat dissipation support () is circumferentially disposed.
A kind of 5. anode construction for short arc mercury xenon lamp according to claim 4, it is characterised in that second annular
Radiating groove (4a) is U-lag；The width of second circular radiating groove (4a) opening portion is 540 μm -560 μm, bottom to opening portion
Depth be 280 μm -320 μm；Spacing between two neighboring second circular radiating groove (3a) is 600 μm -800 μm.
A kind of 6. anode construction for short arc mercury xenon lamp according to claim 4, it is characterised in that second annular
The contact site of radiating groove (4a) bottom surface and side wall is fillet structure, and radius of circle where the fillet is 100 μm -120 μm；Second annular
The contact site of radiating groove (4a) opening portion and auxiliary heat dissipation support (4) outer wall is fillet structure, and radius of circle where the fillet is
100μm-120μm。
A kind of 7. anode construction for short arc mercury xenon lamp according to claim 1, it is characterised in that the round platform portion
(2) axially spaced on the outer wall of middle part to be evenly equipped with some 3rd circular radiating grooves (2a), each 3rd circular radiating groove (2a) is along circle
Platform portion (2) is circumferentially disposed.
A kind of 8. anode construction for short arc mercury xenon lamp according to claim 7, it is characterised in that the 3rd annular
Radiating groove (2a) is V-shaped groove；The width of the 3rd circular radiating groove (2a) opening portion is 80 μm -90 μm, bottom to opening portion
Depth is 200 μm -220 μm；Spacing between two neighboring 3rd circular radiating groove (2a) is 110 μm -130 μm.
A kind of 9. anode construction for short arc mercury xenon lamp according to claim 7, it is characterised in that the 3rd annular
Radiating groove (2a) bottom is fillet structure, and radius of circle where the fillet is 20 μm -30 μm；3rd circular radiating groove (2a) opening portion
Contact site with round platform portion (2) outer wall is fillet structure, and radius of circle where the fillet is 60 μm -70 μm.
A kind of 10. anode construction for short arc mercury xenon lamp according to claim 1, it is characterised in that the radiating part
(3) connected between auxiliary heat dissipation support (4) by being connected round platform (6), outer wall and the horizontal plane institute shape of the connection round platform (6)
Into angle be that α is 130-140 °, the height H of the connection round platform (6) is 1.2-1.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286594.7A CN107845562B (en) | 2017-12-07 | 2017-12-07 | Anode structure for short-arc mercury xenon lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286594.7A CN107845562B (en) | 2017-12-07 | 2017-12-07 | Anode structure for short-arc mercury xenon lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107845562A true CN107845562A (en) | 2018-03-27 |
| CN107845562B CN107845562B (en) | 2023-11-03 |
Family
ID=61663328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711286594.7A Active CN107845562B (en) | 2017-12-07 | 2017-12-07 | Anode structure for short-arc mercury xenon lamp |
Country Status (1)
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181053B1 (en) * | 1999-04-28 | 2001-01-30 | Eg&G Ilc Technology, Inc. | Three-kilowatt xenon arc lamp |
| JP2003223865A (en) * | 2002-01-31 | 2003-08-08 | Ushio Inc | Positive electrode for discharge lamp and short arc discharge lamp |
| CN101271819A (en) * | 2007-03-23 | 2008-09-24 | 株式会社Orc制作所 | Discharge lamp |
| JP2013206827A (en) * | 2012-03-29 | 2013-10-07 | Iwasaki Electric Co Ltd | Short arc type mercury lamp |
| CN203659800U (en) * | 2013-12-18 | 2014-06-18 | 深圳市凯世光电科技有限公司 | Short arc type discharge lamp |
| CN203721677U (en) * | 2013-10-10 | 2014-07-16 | 深圳市凯世光电科技有限公司 | Short-arc discharge lamp |
| CN205582887U (en) * | 2015-12-25 | 2016-09-14 | 梅州市亮如昼科技有限公司 | Tungsten heart -yang utmost point for lamps and lanterns |
| JP2017120690A (en) * | 2015-12-28 | 2017-07-06 | 株式会社オーク製作所 | Discharge lamp |
| CN207474416U (en) * | 2017-12-07 | 2018-06-08 | 梅州市亮如昼科技有限公司 | A kind of anode construction for short arc mercury xenon lamp |
-
2017
- 2017-12-07 CN CN201711286594.7A patent/CN107845562B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181053B1 (en) * | 1999-04-28 | 2001-01-30 | Eg&G Ilc Technology, Inc. | Three-kilowatt xenon arc lamp |
| JP2003223865A (en) * | 2002-01-31 | 2003-08-08 | Ushio Inc | Positive electrode for discharge lamp and short arc discharge lamp |
| CN101271819A (en) * | 2007-03-23 | 2008-09-24 | 株式会社Orc制作所 | Discharge lamp |
| JP2013206827A (en) * | 2012-03-29 | 2013-10-07 | Iwasaki Electric Co Ltd | Short arc type mercury lamp |
| CN203721677U (en) * | 2013-10-10 | 2014-07-16 | 深圳市凯世光电科技有限公司 | Short-arc discharge lamp |
| CN203659800U (en) * | 2013-12-18 | 2014-06-18 | 深圳市凯世光电科技有限公司 | Short arc type discharge lamp |
| CN205582887U (en) * | 2015-12-25 | 2016-09-14 | 梅州市亮如昼科技有限公司 | Tungsten heart -yang utmost point for lamps and lanterns |
| JP2017120690A (en) * | 2015-12-28 | 2017-07-06 | 株式会社オーク製作所 | Discharge lamp |
| CN207474416U (en) * | 2017-12-07 | 2018-06-08 | 梅州市亮如昼科技有限公司 | A kind of anode construction for short arc mercury xenon lamp |
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| Publication number | Publication date |
|---|---|
| CN107845562B (en) | 2023-11-03 |
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Effective date of registration: 20231009 Address after: 221400 Zhongzhuang village, BEIGOU Town, Xinyi City, Xuzhou City, Jiangsu Province Applicant after: JIAGNSU PUYA LIGHTING TECHNOLOGY PUBLIC Co.,Ltd. Address before: 514000 Shoutai Village, Daping Town, Meixian District, Meizhou City, Guangdong Province (within Guangming Garbage Power Generation Company) Meizhou Liangruyan Technology Co.,Ltd. Applicant before: MEIZHOU LIANGRUZHOU TECHNOLOGY Co.,Ltd. |
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