任我草在线观看视频,国产免费观看啪啪啪,日韩欧美午夜电影在线,日本偷拍视频久久久,看东北女人操逼视频,操逼小视频内射全免,久久亚洲精品性色av,しぼっちゃうぞ中文在线观看,操美女在线视频观看

Vacuum evaporation means the evaporation materials are evaporated to atoms or molecules in vacuum by current heating, electron beam heating and laser heating. Atoms or molecules make rectilinear motion to impact substrate surface and condense to form films.

NEXTECK (NEXTECK www.tudous.com) provides various high quality evaporation materials, with a full range of purities and sizes, to meet customers’ needs. Our precious and non-precious films are widely used in automotive, aerospace, physic, flat panel display, magnetic/light recording medium, coated glass, optical coating , hard film, decorative film and other fields.