If you have a contract to get a slimming needle, you are responsible. If you have a contractual relationship with the consumer, the consumer can ask you to take responsibility, which is a contractual relationship and causes losses to the consumer. You can also apply for additional manufacturers as defendants. The law stipulates: Article 577 of the Civil Code stipulates that if the party liable for breach of contract fails to perform its contractual obligations or fails to meet the contract obligations, it shall bear the liabilities for breach of contract such as continuing to perform, taking remedial measures or compensating for losses.