About product and suppliers:
            5,173 refinery products are offered for sale by suppliers on Alibaba.com, of which machine oil purifier accounts for 20%, waste management accounts for 1%, and other chemical equipment accounts for 1%. 

A wide variety of refinery options are available to you, 

There are 5,158 suppliers who sells refinery on Alibaba.com, mainly located in Asia. The top countries of suppliers are India, China, and India, from which the percentage of refinery supply is 1%, 92%, and 1% respectively.