TZA/673
WTO/TBT
Tanzanie - 71 - Génie chimique
- 25 - Sel; soufre; terres et pierres; plâtres, chaux et ciments
2022-01-22
2021-11-24
School chalk; Chalk (HS 2509); Other products of the chemical industry (ICS 71.100.99)
DEAS 25:2021, School chalk— Specification, Second edition (22 page(s), in English)
This Draft East African Standard specifies requirements, sampling and test methods for solid white and coloured school chalks intended to be used on chalkboards.