According to the requirements of Proposition 65 in California, the California government updates the list of chemicals once a year. Currently, nearly a thousand chemicals that are carcinogenic, teratogenic, or have other reproductive toxicities have been included in this list. Twelve months after a chemical is added to the list, if a product contains such a chemical and poses an exposure risk to consumers, the enterprise is required to affix a warning label. Otherwise, it may face risks such as litigation and high - value compensation.