Shanghai Yinsong Machinery Manufacture Co.,LTD ( SYMM), headquartered in beautiful Kangqiao Peninsula, Shanghai, China, which specializes in the research and development of diesel/gsoline generating products and electricity technology, as well as integrates production and marketing as a whole service chain. Under the ??? Quality First, Customs are God, Act Beyond Users, Share User???s Concern??? Customer Idea, relied on its consummate technology and excellent development capacity and products in ...