Nantong Yuanzhi Trading Co., Ltd. is situated in Haian City, Jiangsu Province, China. Yuanzhi Trading specializes in manufacturing transformers, including large ultra-high voltage power transformers (500KV, 220KV, and 110KV), various dry type transformers and oil-immersed transformers at 35KV, as well as box transformers of different specifications. We also produce electric furnace transformers, rectifier transformers, mining transformers and other special types. All our products have successfully passed rigorous testing conducted by the national transformer quality supervision and inspection center, the national electrical product quality supervision and inspection center, as well as the China Electric Power Research Institute Wuhan Branch for routine tests, type tests and special tests. Moreover, we have obtained ISO9001:2015 quality management system certification along with ISO45001:2018 occupational health and safety management system certification; ISO14000:2015 environmental management system certification; Jiangsu Province enterprise metrology qualification certification. Additionally,our 10KV and 35KV power transformers along with box-type substations have been granted International Electrotechnical Commission IEC certification. Our products are CSA certified and meet UL standards issued by UL Limited in the United States.