Since 2011, Wanli has established a perfect quality management system in accordance with the requirements of API SPEC Q1 and ISO 9001 standards and in combination with the actual situation of the company, and obtained the certification issued by American Petroleum Institute. Meanwhile, in order to monitor the product quality comprehensively, Wanli laboratory has introduced more than thirty advanced devices at home and abroad and equipped with many professional testers, and Wanli has owned a CNAS-accredited fracturing proppant testing laboratory, which can issue CNAS testing reports mutually recognized by many countries in the world.