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

　　Laizhou Guangcheng Chemical Co., Ltd. is located in Chengguo industrial park, Guangcheng now enjoys good location for it is close to harbor, airport, and only 2km away from external cycle highway (east) of Laizhou city.

　　We have a comprehensive QC management system and professional production line,As a specialized manufacturer and trader of sulfamic acid and magnesium sulfate, Guangcheng annually produces 6,000 tons of Sulfamic acid and 25,000 tons of magnesium sulfate now. Relying on well-operated sales network all over the world, our products are well sold in the world and highly appraised by our customer for excellent quality. Upholding such idea of "customer supreme, striving for development" and philosophy of "Utmost Sincerity to Customer, establishing our business by honest behavior", Guangcheng is working hard to provide excellent service for customers. We sincerely welcome your business.