Home / Standards / GB/Z 41921-2022 GB/Z 41921-2022 Active Assistive products for blind and vision-impaired persons—Tactile walking surface indicators 视障者用辅助器具 盲道 Standard Type GBZ ICS 03.080 CCS C45 Status 现行 Issue Date 2022-10-14 Implementation N/A Responsible Dept 民政部 Drafting Unit N/A