Shandong Derui Mining Machinery Co., Ltd. is a trackless mining equipment manufacture specialized in underground L.H.D. The company is located in the beautiful kite capital-Weifang, where is a beautiful environment, pleasant scenery. South is Mountain Yi and north lies to Bohai. Weifang is the transportation hub from Shandong inland to peninsula. The company's registered capital is RMB 10,000,000 covering an area of 35000 square meters, The building area is 20000 square meters, possessing key advanced machinary processing equipment and heat treatment, including processing center, numerical control machine, plasma cutting machine. The company composed of scientific research team by a group of experts and engineer who engaged in the R&D and production of L.H.D and underground mining equipment in long term. We are a technology enterprise, University of science and technology personnel account for more than 75% of the management personnel. In view of the current existing domestic L.H.D with high failure, unreasonable structure and maintance difficulties, through unremitting efforts, R&D personnel absorbed and introduced abundance foreign advanced equipment and parts of same kind Through continuous improvement and testing, We successfully R&D DRWJ type underground L.H.D series with own intellectual property, The main function parts of this series product adopting imported parts and the integral performance over domestic product through all repeated underground mining test in all kinds of bad conditions. The whole set with beautiful appearance, compact structure, excellent performance, convenient maintenance. Our products are warmly welcomed by customers. "Being a man is a virtue" is the base of Derui. "Quality endless, Service have no boundary" is the way of development. Being the super trackless mining equipment heart and soul is the goal that Derui to pursuit by unremitting efforts.