There are two types of batteries of the same type in the market: brand A and brand B. The battery price of brand A is 10% lower than that of brand B, and the former is more popular than the latter. The brand is selling well because consumers do not know the difference in life between the two batteries. In this way, in a competitive market, inefficient products that should have been produced less should be produced more. This shows that incomplete information can lead to Market failure. Based on this: (). ['When the product information owned by consumers is insufficient and the market cannot play an effective role in allocating resources, government intervention is required.', "Manufacturers should indicate the product's composition, function and production date on the product label.", 'Consumers can make the right shopping decision only if they have sufficient information about the product and understand the true value of the product.', 'Anti-unfair competition law and consumer rights protection law should be improved.']