日韩欧美三级片在线,久久99精品国产.久久久久,2020国产成人综合网,99国产精品久久久久久久久久久,中国免费高清在线观看_久久国产精品免费无码二区_日本一级黄片视频_日国产av自拍_妈妈用嘴巴帮我消火

Product list
Contact us

Tax Registration Number: 91440101552358350G

Bank:BANK OF CHINA GUANGZHOU ZENGCHENG ZHONGXIN SUB-BR

Account :705569418477

E-mail: gdyshg@163.com

Tel: 15118868698 020-87471488

Business address:The new town of Zengcheng District of Guangzhou Ctiy in Cunjing Fung pui road 30

Silver Chrome-Free passivation Agent,Passivation and color preserving of silver layer,Anti-oxidation of silver layer

Product Name:Silver Chrome-Free passivation Agent,Passivation and color preserving of silver layer,Anti-oxidation of silver layer

Price:



Silver Chrome-Free passivation Agent,Passivation and color preserving of silver layer,Anti-oxidation of silver layer


Silver Chrome-Free passivation Agent,Passivation and color preserving of silver layer,Anti-oxidation of silver layer



First,  product number :Q/YS.804(Yi Shun brand)


Second,  range of application:

This product is suitable for passivation treatment of silver jewelry, silver conductive layer, silver surface, do not affect the color of silver, does not affect the conductivity, environment-friendly, non-toxic, can effectively prevent the silver layer discoloration and becoming dark.


Third, product index:

 1 colorless:transparent liquid

 2.no special smell

 3.PH value :neutral

 4.proportion: 1.0g/cm3


Fourth, usage method

1.working liquid(Q/YS.804):water(tap water)=1:8 to 10 

2.clean silver dip in silver passivator for 3-5minutes, passivation temperature :25-60 degrees centigrade.

3.washing the passivated silver layer

4.drying to remove water to save.


Fifth,  matters needing attention:

1.products should be sealed to prevent pollution and volatile .

2.add about 5% Q/YS.804 silver passivation solution.


Other processingChemical nickel plating liquidChemical silver plating liquid (copper substrate)Metal polishing AgentCopper surface treatment agent seriesSilver layer blackening agentDedicated blackening agent for cast aluminum