June 4 morning, a group of mining waterproof airtight doors were loaded in the intelligent equipment workshop of Shandong China Coal Group after inspection and would be sent to a mine in Shenmu County, Shaanxi Province.
Waterproof airtight door, independently researched and produced by Shandong China Coal Group, mainly used for the underground main substation and the main pumping station and drainage channels leading to the shaft bottom, to prevent underground sudden leakage and immersion. The shipped mining waterproof airtight door was modified on the basis of original products. And with the advantages of fast close, rugged, good sealing, easy to use, the new type waterproof airtight door, since put into the market, was widely praised by domestic and foreign customers. At present, this kind product has passed MA, and each safety standards are in full compliance with state regulations.
Over the years, China Coal Group always adhere to the business philosophy, " Seek development by service, Strives for the survival by the quality",produced and sold high quality products, which has never occurred any problems. China Coal products were widely praised by domestic and foreign customers, kept the product market share ahead in the same industry. At present, China Coal products have been sold throughout 34 provinces and autonomous regions, which established a new benchmark for the development of mining machinery industry!