Xyoo 1970.9.28: Tuam txhab tsim
Cov tuam txhab ua ntej yog "Yuhang xyoob khoom muag thiab nag tau siv Hoobkas".
1990 - 1999: Kev tsim kho tshiab, loj hlob sai
Ua 7 Tshawb Fawb Kuaj, muaj ntau tshaj 200 tus kws tshawb fawb qib kev tshawb fawb lub zog thiab muaj txog 1/3 kev ua lag luam hauv Suav teb
2000 - 2008: kev hloov pauv thev naus laus zis
Los ntawm hluav taws xob 9 lub chaw tsim khoom hloov pauv mus rau tag nrho cov kev pab cuam
2009 - 2015: Ntse thiab Kev Txhim Kho Kev Txhim Kho
Siv hluav taws xob hauv hluav taws xob, dej metre, roj me, thermal meters, thiab lwm yam. Tsim cov kev tswj hwm lub zog thoob ntiaj teb
2015
"Holley metecting Ltd." muab npe rau "Holley Technology Ltd."
2016 - Tam sim no: Zog thiab IOT, Kev Hloov Hloov
Pib 3 qhov kev hloov pauv loj (IPD, nws, cov ntse tsim kho) tag nrho kev hloov mus rau lub zog thiab iot kev lag luam ecological lub tswv yim.
