Uchungechunge lwe-SN lwephampu yezikulufu ezintathu, uchungechunge lwe-SM lwezikulufu ezintathu, uchungechunge lwe-screw 3G lwe-3G, uchungechunge lwe-SPF lwezikulufu ezintathu: lusetshenziselwa ukuthutha uwoyela wokugcoba wama-viscosities ahlukahlukene nezingcindezi.
Iphampu yegiya uchungechunge lwe-NHG, uchungechunge lwephampu yegiya ye-NHGH, uchungechunge lwephampu yegiya ye-KCB: lusetshenziselwa ukuthutha uwoyela wokugcoba ophansi.
Isikhathi sokuthumela: Sep-30-2022