Lianyungang Longhai Mining Machinery Manufacturing Co., Ltd. began in 1996, formerly known as Lianyungang Longhai mining machinery manufacturing factory. Since 2006, it has introduced foreign capital and changed its name to Lianyungang Longhai Mining Machinery Manufacturing Co., Ltd.

 (hereinafter referred to as "Longhai mining machinery"). First engaged in the production and sales of small beneficiation equipment such as magnetic separators. Vacuum filters have been produced since 1999. Cylindrical vacuum filter, disc vacuum filter (plastic plate, filter cloth and filter medium). Since 2005, we have seen that many fine-grained concentrates and tailings in the mine beneficiation industry need to be dehydrated, the aperture of the filter cloth of the disc filter is too large, and the filtered fine-grained ore is easy to stick to the surface of the filter cloth or penetrate. In addition, the filtrate is too turbid and does not meet the discharge standard, so we began to produce a ceramic vacuum filter with a higher degree of automation. The filtrate is clear, the filterable material particles can reach 325 mesh, the water content is lower, and the degree of automation is higher, Lower power consumption.