Qingdao jiupin oil residue training class. According to Baidu map, the address of Qingdao Jiupin Oil Residue Training Course is located in Haiyi New City Farmers' Market, Linfen Road, Licang District, Qingdao. This training course is only engaged in oil residue technical training. Based on the training experience of oil residue in previous years, combined with the present situation and future of oil residue industry, Jiupin spent a whole year systematically and comprehensively optimizing the training course, which was a purely practical training.