The Yanzhou Everbright Machinery Co., Ltd. was established in 2006 a production screw, large screw, mining machinery and equipment-based enterprises. Our technical staff has more than 30 years experience of producing trapezoidal screw, lead screw, won the provincial superior. Departmental standards. 1M-8M, etc. all kinds of special precision screw lathe, finishing at a constant temperature, the dynamic laser measurement thread precision, computer data analysis, capable of producing standard screw. The special toothed screw. The long screw. Lead screw. Reciprocating screw. Shaped screw, with the production of large heavy-duty long screw the ability to have multiple production lines, fully equipped with specialized production level, is the largest processing base of the trapezoidal screw.