Recently, the Market Supervision and Administration Bureau of Ningde City, Fujian Province, issued a quality bulletin for city-level supervision and spot check of industrial product quality (No.4, 2023). The Bureau carried out city-level supervision and spot checks on the quality of machine-made sand, and a total of 12 batches of products from 12 enterprises were sampled, and no unqualified products were found.
According to the requirements of GB/T 14684-2022 "Sand for Construction", the content of stone powder, clay, mica, organic matter, sulfide and sulfuric acid, chloride and apparent density were tested. Results of
in Ningde