亚洲国产中文无码视频一区二区,国产精品美脚玉足脚交欧美,国产精品一区二区在线不卡,久久婷婷老司机熟女一一区福利

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.