国产精品日产欧美在线一区|一级A特黄毛片高清视频免费看|国产乱子视频一区二区三区免费看|国产精品va在线观看浪潮|"

Application：

New-generation selective OSP refers to the product in particular designed for PCB surface coating and adapted to high-temperature lead-free assembly process, applies to full-copper board and copper-gold mixed board, with no film deposition on gold surface, and highly applies to the production of high-density and fine-spacing PCB.

Advantage introduction：