Tongling long Shun environmental protection is a professional engaged in environmental protection and road maintenance machinery product development and application of high-tech companies, is the national focus on the production of new products relying on enterprises. The company has a strong technology R & D team and and domestic institutions Qiangqiang jointly, developed with independent intellectual property rights of the complete sets of PLC intelligent sand separator, hole cutting machine and sewing machine, such as 16 kinds of engineering machinery products irrigation, especially around the borehole cutting machine created a precedent of domestic cutting machine circular spherical cutting.