Our chain components are made to Unirope quality standards and meet ASTM A952A952M. Most importantly, our markings meet this and the ASME B30.9 standard. In fact, our sling tags exceed the ASME B30.9 and Canadian Provincial requirements as we list ALL applicable lifting angles separately and include serial numbers and date of manufacture or repair. Our alloy chain is made to ASTM 972 (Grade 100) and ASTM 391 (grade 80) in either the USA or Germany. We DO NOT use chains made in China, Korea, India, or elsewhere in the Far east. Furthermore: WE SERVICE WHAT WE SELL. We do the inspection, repairs and PROOF TESTING. Our Ontario, Quebec and Edmonton locations have state of the art and ASTM E4 calibrated pull test beds. Our Field Inspection Service is equipped with Mobile Test Beds and performs these services at your plant (Canada is large, so some travel restrictions may apply). By the way: not only ours but other brands as well. Plus, we repair, test and re-certify all kinds of lifting products.