Group 1 - The core point of the article is the adjustment of the mandatory product certification (CCC certification) model for 16 types of products, which will require third-party certification instead of self-declaration starting from January 1, 2027 [1] - The announcement by the State Administration for Market Regulation specifies that the 16 products must obtain CCC certification and affix the CCC mark before they can be manufactured, sold, imported, or used in other business activities [1] - Designated certification agencies will begin accepting applications for CCC certification for these products starting July 1, 2026, and companies must complete the certification conversion by December 31, 2026 [1] Group 2 - The 16 products that require CCC certification include automotive safety glass, seat belts, external lighting devices, indirect vision devices, vehicle recording devices, reflective markings, fuses, small power motors, electric drills, angle grinders, hammers, and various types of welding machines [1] - Products that have already been manufactured and are no longer in production during the self-declaration validity period do not need to convert to the new certification model and can continue to be sold [1]