Heat Transfer Oil（导热油）— manufactured by Shandong Huanqiu Lubricant Oil Co., Ltd. Blended in-house from SINOPEC Group II–III base stocks at our Jinan plant.
Specification sheet (as published by the manufacturer):
Closed-Circuit Heating
Base oilSINOPEC · GROUP II–III
Packing1L · 4L · 18L · 200L · IBC
CertificationISO 9001 · 14001 · 45001
TraceabilityBATCH-LEVEL