Dandong Li Yuan Petroleum Chemical Plant is a stock cooperate enterprise which specializes in series products of lubricant, lubricant grease manufacturing. Production techniques and directions are managed by specialists who have more than 40 years work experience in the field of lubricant production, and professional quality assurance for raw material, semi finished products and finished products guarantees products according with correlative standards. Qualified rate has reached to 100 percent through many years unremitting selective examined by Dandong Quality Technology Supervise Bureau and Liaoning Province Quality Technology Supervise Bureau ,and the plant also have been awarded ‘Quality Assurance Eligibility Unit’ ,certificate and tablet, and was rewarded “ Quality Tracing Service Unit” by China Quality Supervise Liaoning Branch,certificate and tablet. A large volume products have been exported to North Korea for many years, its qualified rate amount to 100 percent through the examination held by Dandong Export Examination Bureau, products of the plant has gained high reputation in internal and external market.