Bright Stock Refined，high viscosity lubricating oil usually made from residual stocks by suitable treatment，such asa combination of acid treatment or solvent extraction with dewaxing or clay finishing.
Bright Stock Refined，high viscosity lubricating oil usually made from residual stocks by suitable treatment，such asa combination of acid treatment or solvent extraction with dewaxing or clay finishing.
光亮油通常由渣油经加工处理而制成的精炼、高粘度微个个润滑油。加工处理的方式包括：酸处理(或溶剂萃取)与脱蜡(或粘土精制)相结合。