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

First, the product code: Q / YS.137 (Yi Shun brand)

Second, the product uses:

This product is designed for non-standard brass, miscellaneous bronze, copper and other impurities containing elements of copper alloy surface treatment. After this product is treated copper alloy, washed, can be used for chemical nickel plating. Special note is: If the copper alloy without this product is difficult to be plated with chemical nickel, so this product is dedicated to the nickel alloy before the activation of nickel plating.

Third, product index:

1, this product is a colorless, transparent and scented liquid.

2, the proportion of> 1.1.

3, PH value: acidic products.

Fourth, the use of methods:

1, the use of this product stock solution, do not add water.

2, the oil-free copper alloy immersed in the chemical nickel pre-activator at room temperature, about 30 seconds -1 minutes later.

3, washed, directly into the surface of copper alloy nickel plated liquid.

Fifth, note:

1, the use of this product stock solution, do not add water.

2, this product should be used  plastic containers.

3, copper alloy activated by the agent, to be washed.

Other processing：Chemical Plating Liquid Train、Chemical nickel plating liquid、Copper surface treatment agent series、Metal cleaning agent、Nickel removal liquid