Engaged in a variety of pump products research and development. The company is located at the junction of Hebei, Shanxi, Shandong and Henan provinces, with convenient transportation and abundant source of raw materials. With assets of more than 30 million yuan and 165 sets of precision casting equipment, it is a medium-sized (second class) enterprise, a high-tech enterprise, a provincial advanced enterprise, and a third-grade qualified enterprise for measurement. Longtan trademark by the Hebei Administration for Industry and Commerce as the trademark of Hebei Province. Production of long shaft deep well pump, submersible pump are provincial quality products, 4 "XD slurry pump won the new product certificate of honor. Problems to be solved: the outlet pressure of SZB double-liquid grouting pump is high, the slurry medium is reasonable, the tunnel cracks and water permeability can be strengthened to achieve long-term use effect, and the construction efficiency can be improved by 18% or more than the existing products. Due to our company's original reversing gear and CAD technical support, its service life has been improved 1-2 times, in the position. Hope to get the technical help and guidance of experts, further improve the product, but also hope to jointly develop new products. At present, the company uses vanishing die casting technology to produce trolley, chain, trolley frame and so on. Compared with ordinary sand casting, the energy consumption and raw material consumption can be reduced by 10%-20%, and the casting cost can be reduced by 10%-30%, which has good economic and social benefits. In the process of casting, large box in the process of EPC casting casting Co., Ltd. will appear deformation, collapse and other problems, making the casting rejection rate as high as 30%. This leads to an increase in production costs and a decline in enterprise benefits.