Tsheb Refrigerant R134a Hfc134a 134 Gas

Q1: Koj puas yog cov chaw tsim khoom lossis lub tuam txhab lag luam? A1: Peb yog cov chaw tsim khoom. Q2: Koj lub sijhawm xa khoom ntev npaum li cas? A2: Feem ntau nws yuav siv sijhawm 15 hnub kom tiav cov xaj. Q3: Koj puas muab cov qauv? puas yog dawb los yog ntxiv? A3: Yog lawm, peb tuaj yeem muab cov qauv. Q4: Koj cov nqe lus them nqi yog dab tsi? A4: New...