垫板

Good plate of paper can be repeated use 3 to 5 times, and then rechange new paper plate.

好垫板纸可以反复使用3～5次，然后再换新垫板纸。

Nickel underplating prevents the migration between tin or gold platings and the base material.

垫板镀镍可防止在镀锡或金层动。