... to palm oil, palm kernel oil, soybean oil, cotton seed oil, rapeseed oil, camellia seed oil, corn germ oil, rice bran oil, sunflower seed oil, etc. ... . Therefore, it is necessary to refine the crude oil. Zhengzhou Yuanyang Group is engaged in the development ... bonding refining technology applying to any crude oil. Considering crude palm kernel oil variety and customs’requirement, Zhengzhou Yuanyang ...