Legal basis: Opinions of the General Administration of Market Supervision on Integrating and Building 123 15 Administrative Law Enforcement System to Better Serve Market Supervision and Law Enforcement integrates the original complaint hotlines for industry and commerce, quality inspection, food and drug, price and intellectual property rights, namely 123 15 and12366. The General Administration of Market Supervision co-ordinates 123 15 system-wide traffic management, manages the data of the national hotline 123 15 in a unified way, strengthens the business guidance to the local hotlines 123 15, ensures the legal and standardized use of number segments in all localities, and promotes smooth and unified answering in all localities. Independent complaint hotlines 123 15 are set up at the provincial, prefecture and city levels, which are divided into two modes: provincial relatively centralized registration and municipal relatively centralized registration, which are selected by the market supervision departments of the provinces (autonomous regions and municipalities directly under the Central Government) according to local conditions. County (district, city) market supervision departments in principle do not set up an independent hotline channel.