亚洲AⅤ与日韩AV在线播放|97色色色视频|精品视频99在线播放|欧美性爱亚洲中文|免费毛片视频网站|亚洲日韩AV片|38AV激情国产|日韩Av在线播放+免费|爱久久视频免费在线观看|亚洲无马视频亚洲AV无无码

					Sapphire seed crystal growth has a directly impact, and have become a key factor to grow high quality crystals. Henergysolar provide high qulity seed and can solve problems with professional knowledge.

					The role of silicon seed crystal is primary; no seed can not grow the crystals. The key is how to choose the seed, what kind of standards? Why is the market price level of seed with large different?

					The exact ratio of silicon dopant direct impact on the success or failure of crystal growth, a small amount, but to highlight the great wisdom! Henergysolar provide one method can auto exact calculate silicon dopant……