99综合,日韩亚洲欧美一区二区三区,中文在线字幕观看,操操操干干干,国产精品一区在线播放,在线永久看片免费的视频,久草福利在线视频

The company's products are widely used in medicine, pesticides, dyes, fluorine-containing liquid crystals, intermediates of cured coatings, electrolytes and cosmetics additives, production of fluorine-containing powder coatings, preparation of raw materials for lithium batteries, production of optical raw materials transparent resin, synthesis of polypeptide compounds, preparation of olefin polymerization catalyst, production of OLED raw materials and other fields.