TX Testing Instruments founded in 1993 with 5.6 million registered capital and self-built factory of 4600m2, is a high-tech corporation with main feature of persistent new products development and specializing in manufacturing portable hardness testers. The test principle and accuracy of TX hardness testers are all in comply with the requirements of applicable ISO standard. Our products are more superior similar products in craftsmanship and accuracy and have gained great reputation from the customers in many countries. All types of our Rockwell hardness testers have been tested by National Institute of Metrology and the errors are less than 1.5 HR, which meet the requirements of applicable ISO standards. The original designs of TX, Magnetic Rockwell and Brinell & Rockwell hardness tester, with the same traditional Brinell and Rockwell testing method, can be applied to large and medium-size workpieces with high accuracy and repeatability, no cut sampling or vertical testing required. The magnetic hardness tester, which has high market application prospect and can replace the Leeb hardness tester with lower accuracy. TX Hardness Testers have provided many unprecedented ways of hardness testing for on-site, quick and accurate testing on metal materials and metal parts, especially on large and extra-large workpieces.