Umlando we-UL
Ngawo-1890, kwaba nomlilo omkhulu e-United States.Icala kwakungugesi.Ukuvimbela ezinye izinhlekelele, uMnu. William h.UMerrill wasungula ngokusemthethweni i-UL (underwriters laboratories) ngo-1894. NgoMashi 24, 1894, yashicilela umbiko wayo wokuqala wokuhlola futhi yaqala umsebenzi wayo wokuvikela ukuphepha.UL iyisikhungo sase-US sokuhlola ukuphepha komkhiqizo kanye nesitifiketi futhi ngumsunguli wamazinga okuphepha komkhiqizo wase-US. Ngaphezulu kweminyaka eyikhulu, i-UL ihlole izindinganiso zokuphepha kumakhulu emikhiqizo nezingxenye.
UL eChina
Eminyakeni engu-30 + edlule, i-UL ibigxile ekukhuleni okwenziwe e-China.Ngenkathi i-UL ingena e-China ngo-1980, yakha ubudlelwano obuhle bokubambisana ne-China inspection and certification (group) co., LTD.(CCIC).Ubambiswano lwaqala ngokuhlinzeka ngezinsizakalo zokulandelela amafekthri aseShayina kanye nokusiza imikhiqizo yamaShayina ukuthi ingene emakethe yasenyakatho Melika.Phakathi neminyaka eyi-10 edlule, i-UL ibitshala imali eningi ezikhungweni zasendaweni futhi yakha ithimba lonjiniyela ukuze banikeze izinto ezilula, ezisheshayo nezilula. izinsiza zasendaweni ezingcono kakhulu kubakhiqizi baseShayina.Ezwekazini laseShayina, amafekthri nabakhiqizi abangaphezu kuka-20,000 banikezwe isitifiketi se-UL, inombolo yocingo yesevisi yezitifiketi ye-UL 0755-26069940.
Uhlobo lwemaki ye-UL
Usayizi ojwayelekile womaka we-UL
I-Anbotek UL igunyaziwe
Njengamanje, i-Anbotek ithole ukugunyazwa kwe-WTDP kwe-ul60950-1 kanye ne-UL 60065, okusho ukuthi konke ukubikezela nokuhlolwa kofakazi kungaqedwa e-anbotek, kwehlise kakhulu umjikelezo wokunikeza izitifiketi.Isitifiketi sokugunyazwa sika-Anbotek simi kanje.
