Wenzhou YiLi Machinery development Co., Ltd, located in No. B507 area of economy & Technology development Center, We insist on the business tenet of “ Quality First, Credit Top” all along. With the manage idea of science & Technology, We are professionally firmware manufacturer which concentrate on developping, make , marketing and service . the main products Includes 8.8 class, 10.9 class,12.9 class and full sets of high intension series bolt and GB1228 steel-construct bolt, also we are able to custom-made all kinds of non-standard products, the products type rank as the first.