-America, Canada- cTUVus&ETL
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America, Canada- cTUVus&ETL
▍ Gịnị bụ cTUVus & ETL CERTIFICATION?OSHA (Nchekwa Ahụike na Ọrụ), nke jikọrọ US DOL (Ngalaba Ọrụ), na-achọ ka ngwaahịa niile a ga-eji n'ebe ọrụ ga-anwale ma nweta asambodo site na NRTL tupu ere ya n'ahịa.Ụkpụrụ nnwale ndị ọdabara gụnyere ụkpụrụ American National Standards Institute (ANSI);Ụkpụrụ American Society for Testing Material (ASTM), ụkpụrụ Underwriter Laboratory (UL), na ụlọ ọrụ mmepụta ihe na-emekọrịta ihe ...