| Distribution transformers Materials | ||||
| No. | Raw Material | Supplier | Country of Origin | Qualification Documents |
| 1 | Paper-covered copper conductor | Shandong Xinze Copper Co., Ltd. | Shandong Province, China | ①Business License ②Organization Code Certificate ③Tax Registration Certificate ④Certificate of Environment Management System(ISO14001:2004) ⑤Certificate of Quality Management System(ISO9001:2008) ⑥Certificate of Occupational Health and Safety Management System |
| 2 | Enamelled copper wire | Huanghua Jinyi Electromagnetic Wire Co., Ltd. | Hebei Province, China | ①Business License ②Test Report ③Certificate of Quality Management System(ISO9001:2000) |
| 3 | Rubber insulation parts | Nantong Shenma Electric Technology Co., Ltd. | Jiangsu Provnce, China | ①Organization Code Certificate ②Tax Registration Certificate ③Certificate of Quality Management System(ISO9001:2008) |
| 4 | Transformer oil | Jiangsu Shuangjiang Perto-chemical Products Co., Ltd. | Jiangsu Provnce, China | ①Business License ②Organization Code Certificate ③Tax Registration Certificate ④Certificate of Environment Management System(ISO14001:2004) ⑤Certificate of Quality Management System(ISO9001:2008) |
| 5 | Tap Changer | Zhejiang Sanmen Tenglong Electrical Appliance Co., Ltd. |
Zhejiang, China | ①Business License ②Organization Code Certificate ③Tax Registration Certificate ④Certificate of Quality Management System(ISO9001:2008) |
| 6 | Paper-covered copper conductor | Shandong Huapeng Electric Co., Ltd. | Shandong, China | ①Business License ②Organization Code Certificate ③Tax Registration Certificate ④Certificate of Quality Management System(ISO9001:2008) |
| 7 | Silicon-Steel Plate | Wuhan Iron and Steel Compay Limited. | Hubei, China | ①Certificate of Quality Management System(ISO9001:2008 |
| 8 | Silicon-Steel Plate | Baoshan Iron & Steel Co., Ltd. | Shanghai, China | ①Certificate of Environment Management System(ISO14001:2004) ②Certificate of Quality Management System(ISO9001:2008) ③Certificate of Occupational Health and Safety Management System |
The relevant information：