long xing group welcome everybody to visit.Lontsine Industrial & Trading Co., Ltd. is a professional developer, manufacturer and distributor in China. We are located in the beautiful seaside city - Qingdao, which is also the largest port in North China. The company adheres to “Quality is the first, Customer is sovereign”, with our good quality and service, we have established stable relationships with our clients from more than 30 countries all over the world, and gotten a good reputation both at ome and abroad.