Liaoning Duolun Machinery Co., LTD is located near the Yalu River at the city of Dandong, Liaoning Province,China; just border with the N. Korea over the Yalu River. Founded in 1992, we are a technology company which can provide services such as scientific research, development, production and manufacturing. We have a number of invention and utility patents and won the progress award of science and technology in Liaoning,China. In 2006, we have been evaluated as high and new technology enterprises, and we have ISO9001 certification and the independent operating right of import and export.