Laizhou Huayin Testing Instrument Co., Ltd. is the enterprise specializing in R&D and manufacture of hardness testers for metal and nonmetal materials and a base appointed to research, develop and manufacture hardness testers. Now the company has more than sixty years of production history. The main products have been awarded “Silver Award for National Best Quality in Testing Machine Industry” for successive three times. The company is the only enterprise gaining this honor in the industry. At present, the company manufactures more than ten thousand over 50 kinds of hardness testers in nine series and more than ten thousand hardness blocks of various standards every year. The products are sold well all over the country and exported to more than 70 countries and regions in America, Europe, Asia, Africa, etc. In addition, the company also manufactures universal tester, torsion tester, impact tester, etc.