With the commissioning of new hydrocracking units, the domestic share of II/III base oils has increased, narrowing the premium of imported resources in East and South China, giving downstream blending plants more flexible sourcing options.

Certification and viscosity index stability remain key concerns for high-end customers switching to domestic materials. SNSUC uses unified quality inspection labels and digital warehouse receipts to place base oils, industrial white oils, and liquid paraffin on the same comparable shelf, reducing selection costs.