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The company employs a number of professors from Petroleum University and Shandong University of Science and Technology as technology developers, adopts the invention patent of the Chinese Academy of Sciences, realizes the industrialized production of product technology, and forms process technology with independent intellectual property rights. And it is a diversified and asset-light development model that independently builds factories, participates in shares, leases factories, or entrusts processing, and has production bases in Jining, Heze, Dongying, Hubei and other places in Shandong. Our company has also formed a close and stable cooperative relationship with Yanchang Petroleum Group...