久久久久国产精品aⅴ天堂,成人性生交A片免费直播APP ,男女扒开双腿猛进入爽爽免费,日本JAPANESE少妇高清

　　Ningbo Economic and Technological Development Zone Jiasi Chemical Co., Ltd. is a high-tech chemical enterprise with R & D, production and sales, has a strong R & D team. We are specialize in Grignard Reaction, Sandmeyer Reaction, Friedel-Crafts Reaction, Brominations, Low-temperature Nitration Reaction,Electronation Reaction,Non-monophase Catalytic Oxidation Reaction,Etherification of Phenolhydrox, Cyclizative Condensation and others cell chemical reaction.Bisides we have our own style of treatment after high-vacuum reaction,which is in the range of -30°C to 350°C .

　　Our main products including: medicine and pesticide intermediates, with the defoaming and wetting propargyl alcohols of non-ionic surface active agent, liquid crystal and electronic chemicals, photosensitive and photochromic materials, chemicals, light trigger agent. The company also undertake custom development and processing business. We sincerely look forward to cooperating with all friends from all over the world!