Akụkọ ihe mere eme nke UL
N'afọ ndị 1890, nnukwu ọkụ dara na United States.Onye kpatara ya bụ ọkụ eletrik. Iji gbochie ọdachi ndị ọzọ, Maazị William h.Merrill tọrọ ntọala UL (underwriters laboratories) na 1894. Na Machị 24, 1894, o bipụtara akụkọ nnwale mbụ ya wee malite ọrụ nchekwa nchekwa ya.UL bụ ụlọ ọrụ nchekwa nchekwa ngwaahịa na asambodo US yana onye malitere ụkpụrụ nchekwa ngwaahịa US. Ihe karịrị otu narị afọ, UL anwalela ụkpụrụ nchekwa na narị ngwaahịa na akụrụngwa.
UL dị na China
N'ime afọ 30 + gara aga, UL na-elekwasị anya na uto nke emere na China. Mgbe UL banyere China na 1980, o guzobere mmekọrịta mmekọrịta dị mma na nyocha China na asambodo (otu) co., LTD.(CCIC) .Mmekọrịta ahụ malitere site n'inye ọrụ nlekota oru maka ụlọ ọrụ ndị China na inyere ngwaahịa ndị China aka ịbanye n'ahịa North America.N'ime afọ 10 gara aga, UL na-etinye ego dị ukwuu na ụlọ ọrụ mpaghara ma wuo otu ndị injinia iji nye mfe, ngwa ngwa na ọmarịcha ọrụ mpaghara maka ndị na-emepụta China.Na China China, ihe karịrị ụlọ ọrụ 20,000 na ndị na-emepụta ihe enwetala UL asambodo, UL asambodo ọrụ hotline 0755-26069940.
Ụdị akara UL
Ogo ọkọlọtọ nke akara UL
Anbotek UL nyere ikike
Ugbu a, Anbotek enwetala ikike WTDP nke ul60950-1 na UL 60065, nke pụtara na enwere ike mezue amụma amụma na ule akaebe na anbotek, na-ebelata usoro asambodo.Asambodo ikike nke Anbotek bụ nke a.
