Keyuan Petrochemicals has received the approval for a patent related to its proprietary production process, called MEP (Multiple Ethylene Propylene), an exclusive technology used in Keyuan's existing production process.

The company has developed this proprietary production process that improves the manufacturing efficiency and flexibility for a wide range of petrochemicals.

The utility model patent received, #ZL-2010-2-0191523.6, applies to a processing technology used in the production of ethylene and propylene that allows the company to use lower grade feedstock (such as heavy oil) instead of Naphtha, a higher grade feedstock commonly used in other existing petrochemical production processes.

Additionally, it also allows the company to improve the yield and utilization rate of its production line, resulting in a 15% cost savings.