The Caofeidian Northern Maintenance Inspection Unit is very good. Caofeidian Wuye Maintenance Company is good. Wuye Group Shanghai Maintenance Caofeidian Branch has the country's leading standards, patents and technologies for the maintenance of coke ovens, dry quenching, chemicals, cold rolling and other equipment. It has offices in Shanghai, Jiangsu and Zhejiang. We have undertaken the equipment service business of many large enterprises in Anhui, Hebei, Yunnan, Xinjiang and other places.