Deyang he dragon technology development co., LTD., is a modern enterprise system in accordance with the established joint-stock companies, mainly to provide users with the centrifugal ductile iron pipe production line design, manufacture, installation and the production technical services, and undertake all kinds of metallurgical plant, foundry plant process design and plant design, the design and construction of all kinds of industrial furnaces, Provide all kinds of non-standard equipment design, development and processing manufacturing, provide all kinds of electrical, hydraulic, pneumatic system design and processing manufacturing.