TIANYI High Tech Ltd. produce cemented carbide (tungsten carbide, hard alloy) products by hot vacuum pressing method. From 2000 TIANYI High Tech Ltd. produce and supply cemented carbide (tungsten carbide, hard alloy) semi-finished products and finished products, especially tungsten carbide rolling rolls and rings, and tungsten carbide rods for the enterprises of China and other countries.At current moment our company is one of the largest manufacturer of tungsten carbide rolling rings and rolls on the territory of China. Accordingly with main principle "diamond teeth of the modern industry", our company fulfills the program of scientific-research accompaniment of our products. The important direction of investigations is analysis of main wear mechanisms for tungsten carbide products in consumer's conditions. It is necessary to durability growth and discharge intensity for product and economical index increase from its exploitation. Investigations of working parameters for tungsten carbide products are used for development of optimal compositions and structures of items for these specific exploitation conditions.Our tungsten carbide products are used on numerous metallurgical and mineral resource enterprises of China and other countries. Besides we are glad to propose wide range of consulting service from our highly skilled specialists in the material science, metallurgical and rolling fields for our consumers.