... SRCC certificates OEM Separate solar collector with heat pipe Products Intro with keymark certificateSC-C01The ... 1.5m 4, Heat preservation: 72hrs 5, Hail resistance: 25mm 6, max pressure: 10 bar 7, working ... pressure: 6 bar8, Coating of vacuum tube: SS-C/CU 9, Heat Pipe ... stainless steel and aluminium nitride planting layers, heat absorption rate can reach more than 93%, certify enough ...