How to protect the rights and interests of consumers in Shanghai Hualian and other supermarkets selling dyed buns

Why do consumer rights and interests protect Shanghai Hualian and other supermarkets have sold dyed buns 'premature' buns for many years. The reporter of 'Consumer Proposition' came to Nanda Road, Baoshan District, Shanghai. The reporter noticed that Shanghai Fuxin Transportation Co., Ltd. was written on the plaque at the door. Walking into this yard, the reporter saw that there are many workshops in the yard, including those that produce bearing components and some that refurbish seats. Where is the branch of Shanghai Shenglu Food Co., Ltd. that produces steamed bread? In a corner of the yard, the reporter saw a lot of packing boxes for steamed buns on the ground, and some workers were busy moving in and out. The staff in the office told reporters that this is the branch of Shanghai Shenglu Food Co., Ltd. Staff: (What brand of company is this?) Sheng Lu, the company's name is Sheng Lu. Entering the second floor, a worker is labeling steamed buns that have been packed into bags. The reporter noticed that the manufacturer of these steamed buns is 'Shanghai Shenglu Food Co., Ltd. branch.' At this time, another staff member came over and told the worker who was labeling that the steamed buns produced by the former ** should also be affixed with a *new production date. CCTV 'Consumer Proposition': Supermarket steamed buns are released in this way. The production date is changed at random. Sodium cyclamate has been sold in supermarkets such as Shanghai Hualian for many years. In some Hualian Supermarkets and Lianhua Supermarkets in Pudong District, Shanghai, the reporter saw them. All the staple food counters are selling three kinds of steamed buns produced by the same company, Gaozhuang steamed buns, corn steamed buns and black rice steamed buns. The salesperson said that these steamed buns are selling well. Salesperson: Two yuan and seven one. (Is this bun good for sale?) It's okay. From the packaging of these steamed buns, we can see that its manufacturer is Shanghai Shenglu Food Co., Ltd. Branch, whose address is Nanda Road, Baoshan District, Shanghai. How are these white, fragrant and soft wheat buns and light yellow and attractive corn flour buns produced?