Welding Quality System Certificate

　　The certificate is ISO3834-2 welding quality system certification, by the international inspection group (BV) issued. Certificate of application: steel structure products. This certificate marks the welding quality system of Tongyu Heavy Industry Co., Ltd. conforms to ISO3834-2: 2005 standard, It can provide steel structure products to meet the requirements of laws and regulations and customer satisfaction, and further improve the competitiveness of the international market.