色婷婷五月最新网站_男女性动态激烈动全过程_免费观看国内A及毛片_中文字幕久久人妻97

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.