欧美点击进入亚洲色中文字幕|国产av通道1区|五月综合缴清在线观看|成人综合av在线|97av成人电影|成人区精品人妻一区二区|日本女同三级片在线观看|亚洲综合无码色悠悠|8mav在线观看|日本成人/区二区电视

					Customer issues within 24 hours to answer, e-mail reply within 24 hours, customer complaints processed within 48 hours, working hard, timely, accurate, warm service.

					Sapphire unique nature determine its widely used, but high-quality sapphire is difficult to get. As we know, sapphire seed crystal growth has a direct impact, but have become a key factor to grow high quality crystals

					Sapphire surface defects and dislocations seriously affect the quality of crystal growth of subsequent epitaxial layers, thus affecting the LED luminous efficiency and lifetime.

					PL detection system can monitor all processes in the solar cell manufacturing and gives accurate analysis possibility to the technology problems.