免费看美女被靠到爽的视频-免费看午夜福利专区-国产薄丝脚交视频在线观看-群交射精白浆视频

FLH331是由合成砂制成的石英材料，具有純度高、少氣泡，無包裹體、透過率高、耐刻蝕、耐高溫等特性。
可運(yùn)用于半導(dǎo)體先進(jìn)制程、光學(xué)、化學(xué)加工、紫外線和高溫窗口等。

FLH331 is a quartz material made of synthetic sand. Thanks to the high purity, few bubbles, no inclusions, high transmittance, etching resistance, high temperature resistance and other characteristics，F(xiàn)LH331 could be used in advanced semiconductor manufacturing process, optics, chemical processing, ultraviolet and high temperature windows,etc.