毛片在线观看AV_久久精品国产亚洲αV麻豆网站_在厨房被c到高潮_亚洲国产男人的天堂你懂的_国产极品粉嫩馒头一线天_最近更新中文字幕手机版_午夜视频等优质视频资源_亚州性夜夜射在线观看_高清无码人妻精品内射视频_2021中文字幕无码免费

Nickel layer chromium-free passivation liquid，nickel layer antioxidant solution，chromium-free passivation solution，nickel layer passivation agent， Chemical nickel organic chromium-free passivator

Nickel layer chromium-free passivation liquid，nickel layer antioxidant solution，chromium-free passivation solution，nickel layer passivation agent， Chemical nickel organic chromium-free passivator

First, the product code: Q / YS.605 (Yi Shun brand)

Second, product features:

This product is suitable for the passivation of nickel plating color, after the passivation of the nickel layer does not change color, and maintain the same color of nickel. Product environmental protection.

Third, product index:

① proportion: 1.1 ± 0.05

② PH value: <7

③ no color, odorless, transparent liquid

Fourth, the use of methods:

① The nickel passivation agent was added 3 times the water to prepare a working solution, and add 60 g / KG of additives.

② The nickel workpiece immersed in passivation working solution, 8-10 minutes, remove the workpiece, clean and dry can be.

Fifth, note:

① Passivation agent used at 50-60 ℃, the processing time is 8-10 minutes.

② The passivation agent should not be contaminated by other chemicals, otherwise it will deactivate the passivation agent.

Other processing：Chemical nickel plating liquid(copper/iron/lead substrate)、Environmental Copper、nickel removal liquidnew nickel deplating agent、Multifunction retreating liquid,Metal deplating liquid、Rapid non-cyanide gold removing solution、Metal polishing Agent