How to compensate for products without warranty certificate

Consumers can be in accordance with the requirements of the consumer to increase the compensation for the loss suffered, the amount of increased compensation for the consumer to purchase the price of goods or services received three times the cost; the amount of increased compensation less than five hundred yuan, five hundred yuan. If it causes personal injury to the consumer or other victims, compensation shall be paid for reasonable expenses for treatment and rehabilitation such as medical fees, nursing fees, transportation fees, and reduced income due to lost work.