On April 15, 2022, the State Administration for Market Regulation and the Standardization Administration jointly issued the Announcement No.6 of 2022 titled “ Announcement about the Approv  al   and Release of ‘Sand for Construction’ and Other 244 Recommended National Standards and Modification Lists of Two National Standards ”. The announcement marks the official approval of three national standards mainly revised by the Beijing University of Civil Engineering and Architecture (BUCEA), namely, “ Sand for Construction ” (GB/T 14684-2022), “ Pebbles and   Crushed Stone   for Construction ” (GB/T 14685-2022) and “ Data Model and Representation for Indoor Map ” (GB/T 41445-2022). The first two will officially come into effect on November 1, 2022 and the third has officially come into effect since April 15, 2022.