Kev lag luam teeb pom kev zoo nyob rau thaum ntxov 2000's muaj ib kab lus rau highbays - yog tias lawv puag ncig coj lawv mus. Qhov no tau xa mus rau kev hloov puag ncig HID highbay fixtures nrog linear fluorescent highbay fixtures.
Ceev ceev mus rau lub caij 2010's thaum LED tau los ua qhov chaw mus thiab tam sim no yog tias nws nyob puag ncig xav kom nws puag ncig. Nrog rau cov duab plaub lossis square fixtures koj feem ntau xav tau ob lub ntsiab lus dai, tab sis muaj cov ntawv thov uas ib qho chaw txuas yog muaj thiab / lossis nws nyuaj rau ntxiv qhov txuas ntxiv.
Ntxiv rau qhov ntawd,round LED fixturesfeem ntau muaj zog dua thiab tuaj yeem tswj tau ntau qhov chaw ib puag ncig ntau dua li cov duab plaub lossis square LED highbays tuaj yeem ua tau. Nws yog ib qho ua tau kom round.
