Control the quality of products from the source, conduct sufficient research and investigation before cooperating with mills, and select mills with best reputation, quality and technology for cooperation;
Strengthen the supervision of the production process, arrange special personnel to be stationed in the production process, take photos and keep samples throughout the process, and randomly sample for testing;
Supervise and control the delivery process, conduct on-site supervision of product packaging, transportation, placement, hoisting, etc., take photos and keep samples, and ensure that the products are shipped intact.