The hard coating surface consists of many hole shapes under microscope after the advanced technology of electrolytic hard coating surface process . these holes shapes are important to retain some oil in the surface while cooking . oil acts as lubricant and results in non - sticky 经电解硬化表面处理后的表面用放大镜可以看到有以下图案所示形状的洞孔,这些洞孔能够在煮食时保留食油于锅的表面,产生润滑作用令煮食时不易粘底。