On September 4, the Hebei Provincial Market Supervision and Administration issued a circular saying that in order to further strengthen the supervision of product quality and safety in our province and effectively safeguard the legitimate rights and interests of consumers, our Bureau adopted the method of purchasing samples to spot check and test waterstops, plastic bags, cement, wall insulation materials, floor coating materials, wires and cables, building waterproofing rolls and other products. 19 batches of unqualified samples were detected. Among them, one batch of unqualified cement samples was detected, and the unqualified item was chloride ion.
In addition, on August 25, the website of Zhengzhou Market Supervision Bureau of Henan Province issued a notice on the spot check of product quality supervision in 2022. The first batch of product quality supervision spot checks
in 2022 included 27 kinds of products, such as color steel sandwich panels, cement, new wall materials, aluminum alloy profiles, manhole covers and so on. Among them, one batch of cement was found to be unqualified. The unqualified items are compressive strength. According to the analysis of technical institutions, the main reason for the unqualified compressive strength of cement is that the production enterprises are not strict in technology, relax the quality requirements in order to maximize the benefits, and increase the amount of mixed materials, resulting in the low strength of cement, which can not meet the requirements of the nominal strength grade.