● PWD-20, PWD-20A and PWD-20B are used to test aluminum profiles on the production site and application. ● PWD-B75 Webster hardness tester is used to test brass tubings. ● PWD-BB75 Webster hardness tester is used to test copper tubings. ● PWD-B92 Webster hardness tester is used to test stainless steel sheets and cold-rolled steel sheets in the manufacturing plant