煤油是提炼石油的副产品。
An integrated industrial system has been formed in (China's) petroleum refining industry.我国炼油工业已经形成完整的工业体系。
These raw materials from petroleum refining go in raw material production and post-bottle production, consumption of water are required.从石油炼制这些原材料到原材料制作及后期瓶生产,用水需要。