Recently, it was learned that the implementation rules of the "Regulations on the Management of Defective Automobile Products Recall" will be released in the near future, and the full text of the implementation rules is expected to be seen before the end of the year. However, according to informed sources, in the forthcoming implementation rules, the contents of the tire recall are missing, and the rules do not recall the tires for further refinement.

It is understood that tires are the only auto parts listed separately in the Regulations on the Recall of Defective Automobile Products. Article 27 of the Regulations is the Tire Recall Regulations. The drafters of the implementation rules had hoped to write in the contents of the tire recall, but due to various difficulties, they failed to do so.

It is learned that in the United States, tires are uniformly classified into equipment categories. In the relevant regulations, when referring to automobile manufacturers, equipment manufacturers are mentioned at the same time. However, in Chinese regulations, it is sometimes confusing to mention car manufacturers and sometimes replace tire manufacturers.

The above-mentioned person said: "It is quite difficult to write the whole vehicle and the replacement tire into the implementation rules at the same time. It seems that this problem is only left behind, when the AQSIQ further develops some normative documents. Then, how to supervise the replacement of tires.

A person from the AQSIQ Defective Product Management Center said: "In fact, the tire recall and the car will not be much different. It is nothing more than writing some principles into the specific operating procedures for replacing the tires."

Article 27 of the Regulations on the Recall of Defective Automobile Products stipulates that if the tires of the automobile products that are not equipped with the vehicle are defective at the time of delivery, the producer of the tires shall be responsible for the recall. The specific measures shall be formulated by the product quality supervision department of the State Council with reference to the regulations.

Carbopol

Poly(acrylic acid) (PAA; trade name Carbomer or Carbopol) is a polymer with the formula (CH2-CHCO2H)n. It is a derivative of acrylic acid (CH2=CHCO2H). In addition to the homopolymers, a variety of copolymers and crosslinked polymers, and partially deprotonated derivatives thereof are known and of commercial value. In a water solution at neutral pH, Carbopol 940 is an anionic polymer, i.e., many of the side chains of PAA lose their protons and acquire a negative charge. Partially or wholly deprotonated PAAs are polyelectrolytes, with the ability to absorb and retain water and swell to many times their original volume. These Sodium Hexametaphosphate properties - acid-base and water-attracting - are the bases of many applications.