... - Henan Gongyi. Company is located in the hinterland of the Central Plains, the south towering Songshan, north surging Yellow River, Longhai ... in a modern private enterprise. In 2003, the company passed the ISO9001: 2000 quality management system certification, has ... Henan Province, Henan Province, R & D center, the provincial excellent enterprise, Sinopec North China branch honors outstanding ...