-Amerika, Kanata- cTUVus&ETL
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Amerika Te Tai Tokerau- cTUVus&ETL
▍ He kupu Whakataki Ko te Whakahaere Haumaru me te Hauora Mahi (OSHA) i raro i te US Department of Reipa e hiahia ana nga hua e whakamahia ana i te waahi mahi kia whakamatauria, kia whakamanahia e tetahi taiwhanga whaimana i te motu i mua i te hoko atu ki te maakete. Ko nga paerewa whakamatautau e whakamahia ana ko te American National Standards Institute (ANSI); American Society for Testing and Materials (ASTM); Laboratory Underwriters (UL); me te paerewa whakahaere rangahau mo te mohio tahi ki nga wheketere. ▍Tirohanga o...