... oil is one kind of edible oil in the world, which the byproduct in the industry of cotton planting. Cotton seed oil is ... one kind of edible oil in the world, which the byproduct in the industry of cotton planting. After been apart from shells ... of cotton plant in Henan, Hebei, Jiangsu, and Hubei province, Sichuan, Shandong, Hunan and Zhejiang provience is the second cotton producing area. Cotton ...