Shanghai Doozer Trade Limited Company (formerly known as Hongrui United Group) was established in 1996 in Shanghai, China, dedicated to producing and selling calcium metal, cored wires, RE materials and rare metal. As the result of continuous development, we have been developed into a comprehensive company integrating industry & trade. Our company consists of three international trading companies and five large-scale manufacturing plants. At present, we are the only united company that produces metallic raw materials and finished products in China. After many years of innovative production & marketing, we have adopted world advanced management modes and established excellent production, distribution and service systems. We have passed ISO9001:2000 certification. With a good reputation, our products of Hongrui brand have been widely used in chemical, medicine and other fields. We have carried out the development strategy of "innovative management, united development, complementary advantages and honesty". We have also adhered to the management philosophy of "meeting customers' demands and Quality First". We have achieved the goal of "fast expansion of our company". We will exert ourselves to reciprocally expand together with our new and old users from at home and abroad.