In coal chemical fields, we have accumulated many years of experience in various projects, also obtained many achievements. For example, we have provided the world-class core equipment MTP reactor for methanol into propylene project, which was developed by Lurgi GmbH. C3 separation tower, which was called NO. 1 tower in Asia. Meanwhile, we have established good long-term cooperation ship with Shenhua Group, Datang international Group, BP and other world well-known companies. Our reference list not only this coal gas filter, but also a lot of others, such as gasifier, converter, polypropylene reactor, heat exchanger, tower, steam drum etc.