Although there are a large number of factories in China, they have different production scales, different regions, different equipment, and different prices of raw materials, which ultimately lead to different product costs. Our company's mission is to find the TOP 10~30 of the industry for each series of products. The factory obtains samples, discusses the price, conducts comparative analysis, selects the top 5 factories for each series of products for cooperation, and keeps them updated for about 1 to 2 years, which may make our price lower than 70% of the factory, and the quality higher than 70% Factory, and we strictly control the profit. In this way, we have lower prices under the premise of quality assurance.