Established in 1948, Laizhou Huayin Testing Instrument Co., Ltd. (Shandong Laizhou Testing Machine Factory) is a professional manufacturer of metal and non-metal materials Hardness Testers with a history of over 60 years. The annual production capacity has exceeded 10,000 sets of Hardness Testers in 6 lines, which are classified as more than 40 dif...

Established in 1948, Laizhou Huayin Testing Instrument Co., Ltd. (Shandong Laizhou Testing Machine Factory) is a professional manufacturer of metal and non-metal materials Hardness Testers with a history of over 60 years. The annual production capacity has exceeded 10,000 sets of Hardness Testers in 6 lines, which are classified as more than 40 different varieties and specifications, and over 100,000 pieces of various standard hardness blocks.