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 surface roughening agent，Coarsening Agent,Chemical Analysis Auxiliaries

Nickel surface roughening agent，Coarsening Agent,Chemical Analysis Auxiliaries

First,Product code : Q/YS.618 (Yi Shun brand)

Second, product use:

This product is used for roughening nickel surfaces. Many tiny pits are formed on the metal surface for subsequent processing, which can significantly increase the adhesion of the coating and increase the adhesive force.

Third, product indicators:

1, Transparent liquid, slight

2, PH value <4

3, The proportion> 1.1

4, The use of liquid, without water

Fourth, use method:

1. Soak the deoiled nickel metal in the coarsening agent and remove it after about 1-3 minutes.

2.Washed clean

3. Neutralize the surface with a small amount of lye, then wash

Other processing：Chemical Plating Liquid Train、Special chemical nickel plating liquid  for micro powder 、Rapidly electroplated copper plating liquid 、Copper rust remover and degreasing agent、High efficiency deplating agent