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On December 29, 2012, Wang yinliang, chief engineer of Daqing Oilfield, led the supplier evaluation expert team to the company for inspection. The company leaders accompanied the company throughout the visit, and introduced in detail the achievements of the company's products, technology, manufacturing, quality, market service and the development process of the company. The review panel highly appraised all aspects of the company's work and affirmed the company's pragmatic work style. The two sides deeply discussed the current situation of the petrochemical industry and the application planning of new technologies and processes, and reached a consensus on further cooperation to realize the equipment upgrading of the petrochemical industry.