The ISO9001 quality assurance system is the foundation for the development and growth of the company. Establish, maintain and improve the company's quality management system, promote the standardization and internationalization of the quality management system, improve the management level of the company, enhance the company's efficiency, and establish the status of the product in the market and its good reputation.

Refers to TUV's services for compliance certification of targets based on criteria, regulations, customer requirements, and other conditions. To carry out related certification, must pass inspection, testing, identification, certification and other means (TUV certification itself is not a certification, but refers to TUV's certification services). This certification is a global market commissioned by TUV to Vergar's auditing of the factory, and Wilco has become a global manufacturer of quality products in China.

Refers to SGS's compliance certification of targets based on criteria, regulations, customer requirements, and other conditions. To carry out the relevant certification, must pass the inspection, testing, identification, certification and other means (SGS certification itself is not a certification, but refers to the SGS certification services). SGS is an abbreviation of Societe Generale de Surveillance S.A., translated as "Universal Public Notary." Founded in 1878, it is the world's largest, oldest and most experienced private third party engaged in product quality control and technical appraisal of multinational companies. Headquartered in Geneva, it has more than 1,000 branches and professional laboratories and more than 59,000 professional and technical personnel around the world. It conducts product quality inspection, monitoring and assurance activities in 142 countries. This certification is China Manufacturing Network commissioned by SGS to Vergar's factory audit certification, VIERGOU has thus become China Manufacturing Network Gold Certified Supplier.