China Machine-Building International Hebei Co., Ltd. is an enterprise specializes in the import and export business of mechanical and electrical products with more than 15years experience, and as import and export agent.

We introduce ourselves as China Chongqing Big Science and Technology Group Co.,Ltd.We are a professional manufacture of CNG series products We devote to the R$D utility gasoline engine which has EU approved .,Due fact that price become higher , gas is clean ...