First, Taber 551 Scratch Tester: Taber 551 Scratch Tester is used to evaluate shear, scratches, planing, scratches, and engraving properties. Its application areas include: rigid organic materials, paint adhesives, powder coatings, anodized materials, soft metals, plastics and glass and so on. It can also be used to test the same material, protective coating adhesive quality and similar materials, the ultimate performance. Taber 551 is simple to operate and easy to move, capable of testing 1/2 "to 4" thick square or round material. Second, Taber 5135/5155 wear test machine: The Taber5135 / 5155 abrasion tester is used to determine the abrasion resistance of the material. The wear resistance of the product is evaluated by a wear test, such as measuring its mass loss, thickness loss, and light transmittance. The Taber5135 / 5155 abrasion tester is suitable for use in testing flat products such as suitcases, carpets, cardboard, clothing, glass, plastic coati...