CN103173035A - Industrial production method of environment-friendly yellow color lake pigment 183 for plastics - Google Patents
Industrial production method of environment-friendly yellow color lake pigment 183 for plastics Download PDFInfo
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- CN103173035A CN103173035A CN2013101043207A CN201310104320A CN103173035A CN 103173035 A CN103173035 A CN 103173035A CN 2013101043207 A CN2013101043207 A CN 2013101043207A CN 201310104320 A CN201310104320 A CN 201310104320A CN 103173035 A CN103173035 A CN 103173035A
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Abstract
The invention relates to an industrial production method of an environment-friendly yellow color lake pigment 183 for plastics and belongs to the technical field of pigment synthesis. The industrial production method comprises the following steps of: based on 2-amino-4, 5-dichlorobenzenesulfonic acid as a raw material, carrying out alkali dissolution-acidification salt forming reaction and diazo-reaction to obtain a diazotization emulsion, adding 1-(3'-sulfophenyl)-3-methyl-5-pyrazolone to the diazotization emulsion, and then carrying out coupling reaction, color lake reaction and pigmentation treatment to obtain the yellow color lake pigment 183. According to the industrial production method, a coating agent is added to carry out pigment surface treatment after the color lake reaction, so that the polarity on the crystal surface of the pigment is favorably reduced, the hydrophilicity of the pigment is reduced, and the manpower hour during unloading is shortened; and the yellow color lake pigment 183 has the advantages of bulky block, bright appearance, easiness for grinding and dispersing, high tinting strength and the like; and the obtained yellow color lake pigment 183 is good in application performance and has the heat resistant temperature of being more than 300 DEG C, the tinting strength of more than 100% close to the standard in PE (polyethylene) and PVC (polyvinyl chloride) media and the tinting strength of being 108% higher than the standard in a PVC sol medium.
Description
Technical field
The invention belongs to the pigment synthesis technical field, be specifically related to a kind of with 2-amino-4, the 5-dichloro benzosulfonic acid is raw material, after the alkali-soluble acid analysis salify, under acid, cold condition through diazotization reaction, with 1-(3 '-sulphenyl)-3-methyl-5-pyrazolone carries out coupled reaction, then carries out the color lake reaction and coating is processed, and synthetic plastic cement is with environment-friendly type toner yellow pigment 183 industrialized preparing process.
Background technology
2-amino-4,5-dichloro benzosulfonic acid (being called for short 6B acid) is a kind of important pigment dyestuff intermediate.It is the ruddiness yellow as synthetic C.I.P.Y.183 (Pigment Yellow 73 183) toner of diazo component, a monoazo color lake class, ruddiness yellow pigment, belong to pyrazolone pigment, can be used as the surrogate of P.Y.83 without p-diaminodiphenyl due to it, due to its excellent thermotolerance and weather resistance, also can substitute medium chrome yellow medium yellow and be used in the plastic cement field, be a kind of environmental protection pigment.
6B acid amino between, contraposition has electron-withdrawing group (chloro), help to strengthen the formation of C.I.P.Y.183 hydrogen bond, when therefore putting on market in recent years, although its tinting strength is slightly low, but the application performances such as its thermotolerance, photostabilization are all good, in high density polyethylene(HDPE) (HDPE) coloring process of 1/3 standard depth, its thermostability can reach 300 ℃, and dimensional change do not occur, light fastness reaches 7～8 grades, is applicable to require the plastics (as engineering plastics ABS, HDPE etc.) processed at higher temperature painted.
The advantages such as C.I.P.Y.183 is the environment-friendly type pigment dyestuff, is the substitute that contains the heavy metal mineral dyes such as cadmium, chromium, and resistance to migration is good.Can be widely used in PP, PE, PVC, RPVC(rigid polyvinyl chloride), PS, painted in the plastics such as ABS.Plastic cement blowing, injection moulding, Electric Wire Factory, sheet material, appliance shell, chemical fibre, engineering plastic raw material, take out the fields such as pellet, dyeing, coating factory, tannery, silicon rubber, fluorine moulding material.
The traditional industrialized preparing process of toner yellow pigment 183 is: after 6B acid, water, liquid caustic sodaization is clear, at low temperatures with hydrochloric acid acid out salify, add sodium nitrite in aqueous solution diazotization, its diazonium salt and coupling component 3SPMP carry out coupled reaction in weak acidic medium, again with the calcium chloride effect, be transformed into calcium salt color lake, thermal treatment, filtration, washing, drying.In its manufacturing processed, the press filtration filter cake is rare and sticking, so be not easy discharging, discharging needs more than 80 minutes, expend when a large amount of artificial, and the pigment material piece that obtains after oven dry is hard, bad dispersibility, pigment color development weak effect when grinding causes tinting strength on the low side, application difficult in the plastic cement system.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide by adding coating to process behind the color lake, change the polarity of granules of pigments by coating function, thereby reduce the pigment wetting ability, adopt simultaneously the diaphragm pressing pressure filter to improve the filter cake solid content, make the press filtration discharging operating time shorten, expect that piece is more bulk, outward appearance is vivid, a kind of plastic cement of the advantages such as easy grinding dispersion industrialized preparing process of environment-friendly type toner yellow pigment 183.
Described a kind of plastic cement is characterized in that comprising the steps: with the industrialized preparing process of environment-friendly type toner yellow pigment 183
1) alkali-soluble acid analysis salt-forming reaction: with 2-amino-4,5-dichloro benzosulfonic acid, water and liquid caustic soda add in reactor, are warming up to 30～35 ℃, and stirring reaction 1 hour obtains clear liquor; Add ice cube in this clear liquor, controlling temperature is 15 ± 1 ℃, adds concentrated hydrochloric acid in 30～40min, obtains white emulsion, then stirs 30min;
2) diazotization reaction: under acidic conditions, add sodium nitrite in aqueous solution in the white emulsion that obtains to step 1) at-10 ℃～5 ℃ temperature, carry out obtaining the diazotization emulsion after diazotization reaction;
3) add water, liquid caustic soda and sodium-acetate in the coupled reaction still, after stirring to clarify, add 1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
4) the diazotization emulsion that coupled reaction: at 29-31 ℃ of temperature, with step 2) obtains adds in the coupled reaction still of step 3) carries out coupled reaction, stirs 1 hour after reaction finishes;
5) color lake reaction: the reaction solution that step 4) is obtained adds in reactor, is warming up to 60 ℃, adds calcium chloride water in this reaction solution, stirring reaction 10min;
6) pigmenting is processed: the coating aqueous solution is joined in the step 5) reactor, after stirring reaction 10min, then this reaction solution is warming up to 89-91 ℃, insulation reaction 10min, then be cooled to room temperature, press filtration, under 80～100 ℃, oven dry, obtain toner yellow pigment 183.
Described a kind of plastic cement environment-friendly type toner yellow pigment 183 industrialized preparing process, it is characterized in that the described 2-of step 3) is amino-4,5-dichloro benzosulfonic acid and 1-(3 '-sulphenyl)-weight ratio that feeds intake of 3-methyl-5-pyrazolone is 100:110～150.
Described a kind of plastic cement is characterized in that the described coupling temperature of step 4) at 29-31 ℃ with environment-friendly type toner yellow pigment 183 industrialized preparing process, and coupling pH value is interval 2～11.
Described a kind of plastic cement is characterized in that with environment-friendly type toner yellow pigment 183 industrialized preparing process the coating described in step 6) comprises any one in octadecyl carboxylic acid sodium, modified rosin, trolamine list olein or low formaldehyde methyl-etherified melamine resin.
Described a kind of plastic cement is characterized in that the 2-amino-4 described in step 6) with environment-friendly type toner yellow pigment 183 industrialized preparing process, and the weight ratio that feeds intake of 5-dichloro benzosulfonic acid and coating is 100:3～10.
Described a kind of plastic cement environment-friendly type toner yellow pigment 183 industrialized preparing process, the press filtration mode described in step 6) that it is characterized in that adopts the diaphragm pressing pressure filter to carry out filter operation.
The toner yellow pigment 183 that the present invention synthesizes, its reaction equation is as follows:
By adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is as follows:
1) color lake reaction of the present invention has been added afterwards appropriate coating and has been carried out the surface of pigments processing, be conducive to reduce the polarity of pigment crystal surface, thereby reduce the wetting ability of pigment, the pigment crystalline particle is more tiny, more easily dehydration during press filtration, shorten discharging when artificial, the material piece is bulk, outward appearance is vivid, easy grinding disperses, the tinting strength advantages of higher;
2) the present invention filters and adopts the diaphragm pressing pressure filter, and after squeezing, the filter cake solid content is high, and discharging is convenient, saves when artificial, reduces simultaneously the energy that consumes in drying course;
3) the present invention is by adopting above-mentioned technology, toner yellow pigment 113 application performances that obtain are good, and its heat resisting temperature reaches more than 300 ℃, and it is more than 100% that the tinting strength in PE, PVC medium is near the mark, tinting strength in the PVC sol medium is 108% higher than standard, is suitable for suitability for industrialized production.
Embodiment
The present invention will be further described below in conjunction with specific embodiment, but embodiment does not limit protection scope of the present invention.
Embodiment 1:
1) 246Kg2-is amino-4, the 5-dichloro benzosulfonic acid adds reactor, adds the liquid caustic soda (following examples liquid caustic soda concentration and the present embodiment are identical) of 2000Kg water and 140Kg concentration 30wt%, is warming up to 30～35 ℃, stirring reaction 1 hour; Slowly add concentrated hydrochloric acid at 15 ± 1 ℃, stirring reaction 30min; Then slowly add 30% sodium nitrite in aqueous solution 400Kg to carry out diazotization reaction at 0 ℃ and stirred 1 hour, excessive Sodium Nitrite is removed with thionamic acid and is obtained diazo liquid;
2) add 2000Kg water in reactor, 256Kg liquid caustic soda and 150Kg sodium-acetate after stirringization is clear, add 271Kg1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
3) diazo liquid is injected this coupled reaction still under 30 ± 1 ℃ and carry out coupled reaction, diazo liquid adds rear stirring 60min; This reaction solution is warming up to 60 ± 1 ℃, adds 30% calcium chloride water 1000Kg to carry out the color lake reaction in this reaction solution; Again 7.4Kg octadecyl carboxylic acid sodium is added 400Kg water heat up molten clear after, be added in this reaction solution, after stirring reaction 10min, then this reaction solution is warmed up to 90 ± 1 ℃, insulation 10min, cooling, press filtration, washing, oven dry, obtain Pigment Yellow 73 183 output: 573Kg under 80～100 ℃, and the pigment outward appearance is vivid, the material piece is bulk, easy grinding disperses, and after press filtration, the discharging operating time is 25min.The pigment applications performance: heat-resisting 300 ℃, it is that tinting strength in 100%, PVC sol medium is 108% higher than standard that the tinting strength in PE, PVC medium is near the mark.
In the present invention, coating replaces the octadecyl carboxylic acid sodium with modified rosin, trolamine list olein or low formaldehyde methyl-etherified melamine resin, all can obtain same technique effect.
Embodiment 2
1) with 246Kg2-amino-4, the 5-dichloro benzosulfonic acid adds reactor, adds 2000Kg water and 140Kg liquid caustic soda, is warming up to 30～35 ℃, stirring reaction 1 hour; Slowly add concentrated hydrochloric acid at 15 ± 1 ℃, more than stirring reaction 30min; Then slowly add 30% sodium nitrite in aqueous solution 400Kg to carry out diazotization reaction at 0 ℃ and stirred 1 hour, excessive Sodium Nitrite is removed with thionamic acid and is obtained diazo liquid;
2) add 2000Kg water in reactor, 256Kg liquid caustic soda and 150Kg sodium-acetate after stirringization is clear, add 295Kg1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
3) diazo liquid is injected this coupled reaction still under 30 ± 1 ℃ and carry out coupled reaction, diazo liquid adds rear stirring 60min; This reaction solution is warming up to 60 ± 1 ℃, adds 30% calcium chloride water 1000Kg to carry out the color lake reaction in this reaction solution; Again 12Kg octadecyl carboxylic acid sodium is added 400Kg water heat up molten clear after, be added in this reaction solution, after stirring reaction 10min, then this reaction solution is warmed up to 90 ± 1 ℃, insulation 10min, cooling, press filtration, washing, oven dry, obtain Pigment Yellow 73 183 output: 587Kg under 80～100 ℃, and the pigment outward appearance is vivid, the material piece is bulk, easy grinding disperses, and after press filtration, the discharging operating time is 25min.The pigment applications performance: heat-resisting 300 ℃, the tinting strength in PE, PVC medium is that tinting strength in 103%, PVC sol medium is 110% higher than standard higher than standard.
Embodiment 3
1) with 246Kg2-amino-4, the 5-dichloro benzosulfonic acid adds reactor, adds 2000Kg water and 140Kg liquid caustic soda, is warming up to 30～35 ℃, stirring reaction 1 hour; Slowly add concentrated hydrochloric acid at 15 ± 1 ℃, more than stirring reaction 30min; Then slowly add 30% sodium nitrite in aqueous solution 400Kg to carry out diazotization reaction at 0 ℃ and stirred 1 hour, excessive Sodium Nitrite is removed with thionamic acid and is obtained diazo liquid;
2) add 2000Kg water in reactor, 256Kg liquid caustic soda and 150Kg sodium-acetate after stirringization is clear, add 396Kg1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
3) diazo liquid is injected this coupled reaction still under 30 ± 1 ℃ and carry out coupled reaction, diazo liquid adds rear stirring 60min; This reaction solution is warming up to 60 ± 1 ℃, adds 30% calcium chloride water 1000Kg to carry out the color lake reaction in this reaction solution; Again the 19.68Kg modified rosin is added 400Kg water heat up molten clear after, be added in this reaction solution, after stirring reaction 10min, then this reaction solution is warmed up to 90 ± 1 ℃, insulation 10min, cooling, press filtration, washing, oven dry, obtain Pigment Yellow 73 183 output: 585Kg under 80～100 ℃, and the pigment outward appearance is vivid, the material piece is bulk, easy grinding disperses, and after press filtration, the discharging operating time is 20min.The pigment applications performance: heat-resisting 300 ℃, it is that tinting strength in 103%, PVC sol medium is 110% higher than standard that the tinting strength in PE, PVC medium is near the mark.
Embodiment 4:
1) with 246Kg2-amino-4, the 5-dichloro benzosulfonic acid adds reactor, adds 2000Kg water and 140Kg liquid caustic soda, is warming up to 30～35 ℃, stirring reaction 1 hour; Slowly add concentrated hydrochloric acid at 15 ± 1 ℃, more than stirring reaction 30min; Then slowly add 30% sodium nitrite in aqueous solution 400Kg to carry out diazotization reaction at 0 ℃ and stirred 1 hour, excessive Sodium Nitrite is removed with thionamic acid and is obtained diazo liquid;
2) add 2000Kg water in reactor, 256Kg liquid caustic soda and 150Kg sodium-acetate after stirringization is clear, add 320Kg1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
3) diazo liquid is injected this coupled reaction still under 30 ± 1 ℃ and carry out coupled reaction, diazo liquid adds rear stirring 60min; This reaction solution is warming up to 60 ± 1 ℃, adds 30% calcium chloride water 1000Kg to carry out the color lake reaction in this reaction solution; Again 24.6Kg trolamine list olein is added 400Kg water heat up molten clear after, be added in this reaction solution, after stirring reaction 10min, then this reaction solution is warmed up to 90 ± 1 ℃, insulation 10min, cooling, press filtration, washing, oven dry, obtain Pigment Yellow 73 183 output: 581Kg under 80～100 ℃, and the pigment outward appearance is vivid, the material piece is bulk, easy grinding disperses, and after press filtration, the discharging operating time is 28min.The pigment applications performance: heat-resisting 300 ℃, it is that tinting strength in 105%, PVC sol medium is 108% higher than standard that the tinting strength in PE, PVC medium is near the mark.
Embodiment 5:
1) with 246Kg2-amino-4, the 5-dichloro benzosulfonic acid adds reactor, adds 2000Kg water and 140Kg liquid caustic soda, is warming up to 30～35 ℃, stirring reaction 1 hour; Slowly add concentrated hydrochloric acid at 15 ± 1 ℃, more than stirring reaction 30min; Then slowly add 30% sodium nitrite in aqueous solution 400Kg to carry out diazotization reaction at 0 ℃ and stirred 1 hour, excessive Sodium Nitrite is removed with thionamic acid and is obtained diazo liquid;
2) add 2000Kg water in reactor, 256Kg liquid caustic soda and 150Kg sodium-acetate after stirringization is clear, add 396Kg1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
3) diazo liquid is injected this coupled reaction still under 30 ± 1 ℃ and carry out coupled reaction, diazo liquid adds rear stirring 60min; This reaction solution is warming up to 60 ± 1 ℃, adds 30% calcium chloride water 1000Kg to carry out the color lake reaction in this reaction solution; Again the low formaldehyde methyl-etherified melamine resin of 14.76Kg is added 400Kg water heat up molten clear after, be added in this reaction solution, after stirring reaction 10min, then this reaction solution is warmed up to 90 ± 1 ℃, insulation 10min, cooling, press filtration, washing, oven dry, obtain Pigment Yellow 73 183 output: 579Kg under 80～100 ℃, and the pigment outward appearance is vivid, the material piece is bulk, easy grinding disperses, and after press filtration, the discharging operating time is 26min.The pigment applications performance: heat-resisting 300 ℃, it is that tinting strength in 105%, PVC sol medium is 112% higher than standard that the tinting strength in PE, PVC medium is near the mark.
Embodiment 6:
1) with 246Kg2-amino-4, the 5-dichloro benzosulfonic acid adds reactor, adds 2000Kg water and 140Kg liquid caustic soda, is warming up to 30～35 ℃, stirring reaction 1 hour; Slowly add concentrated hydrochloric acid at 15 ± 1 ℃, more than stirring reaction 30min; Then slowly add 30% sodium nitrite in aqueous solution 400Kg to carry out diazotization reaction at 0 ℃ and stirred 1 hour, excessive Sodium Nitrite is removed with thionamic acid and is obtained diazo liquid;
2) add 2000Kg water in reactor, 256Kg liquid caustic soda and 150Kg sodium-acetate after stirringization is clear, add 295Kg1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
3) diazo liquid is injected this coupled reaction still under 30 ± 1 ℃ and carry out coupled reaction, diazo liquid adds rear stirring 60min; This reaction solution is warming up to 60 ± 1 ℃, adds 30% calcium chloride water 1000Kg to carry out the color lake reaction in this reaction solution; Again the low formaldehyde methyl-etherified melamine resin of 24.6Kg is added 400Kg water heat up molten clear after, be added in this reaction solution, after stirring reaction 10min, then this reaction solution be warmed up to 90 ± 1 ℃, insulation 10min, cooling, press filtration, washing, oven dry, obtain Pigment Yellow 73 183 output: 590Kg under 80～100 ℃, productive rate: 103.95%, the pigment outward appearance is vivid, the material piece is bulk, and easy grinding disperses, and after press filtration, the discharging operating time is 20min.The pigment applications performance: heat-resisting 300 ℃, it is that tinting strength in 108%, PVC sol medium is 115% higher than standard that the tinting strength in PE, PVC medium is near the mark.
Claims (6)
1. the industrialized preparing process of a plastic cement use environment-friendly type toner yellow pigment 183, is characterized in that comprising the steps:
1) alkali-soluble acid analysis salt-forming reaction: with 2-amino-4,5-dichloro benzosulfonic acid, water and liquid caustic soda add in reactor, are warming up to 30～35 ℃, and stirring reaction 1 hour obtains clear liquor; Add ice cube in this clear liquor, controlling temperature is 15 ± 1 ℃, adds concentrated hydrochloric acid in 30～40min, obtains white emulsion, then stirs 30min;
2) diazotization reaction: under acidic conditions, add sodium nitrite in aqueous solution in the white emulsion that obtains to step 1) at-10 ℃～5 ℃ temperature, carry out obtaining the diazotization emulsion after diazotization reaction;
3) add water, liquid caustic soda and sodium-acetate in the coupled reaction still, after stirring to clarify, add 1-(3 '-sulphenyl)-3-methyl-5-pyrazolone, stir at 30～35 ℃ of temperature, obtain clear liquor;
4) the diazotization emulsion that coupled reaction: at 29-31 ℃ of temperature, with step 2) obtains adds in the coupled reaction still of step 3) carries out coupled reaction, stirs 1 hour after reaction finishes;
5) color lake reaction: the reaction solution that step 4) is obtained adds in reactor, is warming up to 60 ℃, adds calcium chloride water in this reaction solution, stirring reaction 10min;
6) pigmenting is processed: the coating aqueous solution is joined in the step 5) reactor, after stirring reaction 10min, then this reaction solution is warming up to 89-91 ℃, insulation reaction 10min, then be cooled to room temperature, press filtration, under 80～100 ℃, oven dry, obtain toner yellow pigment 183.
2. a kind of plastic cement according to claim 1 is with environment-friendly type toner yellow pigment 183 industrialized preparing process, it is characterized in that the described 2-of step 3) is amino-4,5-dichloro benzosulfonic acid and 1-(3 '-sulphenyl)-weight ratio that feeds intake of 3-methyl-5-pyrazolone is 100:110～150.
3. a kind of plastic cement according to claim 1 with environment-friendly type toner yellow pigment 183 industrialized preparing process, is characterized in that the described coupling temperature of step 4) at 29-31 ℃, and coupling pH value is interval 2～11.
4. a kind of plastic cement according to claim 1 with environment-friendly type toner yellow pigment 183 industrialized preparing process, is characterized in that the coating described in step 6) comprises any one in octadecyl carboxylic acid sodium, modified rosin, trolamine list olein or low formaldehyde methyl-etherified melamine resin.
5. a kind of plastic cement according to claim 1 with environment-friendly type toner yellow pigment 183 industrialized preparing process, is characterized in that the 2-amino-4 described in step 6), and the weight ratio that feeds intake of 5-dichloro benzosulfonic acid and coating is 100:3～10.
6. a kind of plastic cement according to claim 1 is with environment-friendly type toner yellow pigment 183 industrialized preparing process, and the press filtration mode described in step 6) that it is characterized in that adopts the diaphragm pressing pressure filter to carry out filter operation.
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| CN113105751A (en) * | 2021-04-15 | 2021-07-13 | 浙江科隆颜料科技有限公司 | Method for processing low-aniline pigment diazo component |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107629479A (en) * | 2017-09-27 | 2018-01-26 | 浙江科隆颜料科技有限公司 | A kind of pigment orange PO 38 industrialized preparing process |
| CN107674450A (en) * | 2017-09-27 | 2018-02-09 | 浙江科隆颜料科技有限公司 | A kind of plastic cement paratonere PR 38 industrialized preparing process |
| CN113105751A (en) * | 2021-04-15 | 2021-07-13 | 浙江科隆颜料科技有限公司 | Method for processing low-aniline pigment diazo component |
| CN113105751B (en) * | 2021-04-15 | 2023-02-28 | 浙江科隆颜料科技有限公司 | Method for processing low aniline pigment diazo component |
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| CN103173035B (en) | 2014-05-07 |
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Address after: The new road bridge Nanhu District town of Jiaxing City, Zhejiang province 314004 No. 268 Patentee after: CROWN COLOR TECHNOLOGY CO.,LTD. Address before: The new road bridge Nanhu District town of Jiaxing city of Zhejiang Province in 314004 Patentee before: CROWN CHEMICAL Co.,Ltd. |
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Denomination of invention: An industrial production method of environment-friendly lake yellow pigment 183 for plastics Effective date of registration: 20230223 Granted publication date: 20140507 Pledgee: Agricultural Bank of China Limited by Share Ltd. South Lake branch Pledgor: CROWN COLOR TECHNOLOGY CO.,LTD. Registration number: Y2023980033346 |