All products with high-quality natural leather,the outsole have PU/PU ,PU/TPU and PU/RUBBER series.There are waterproof,anti-oil,anti-skid and anti-smashing,insulation,impact resistance ,heat resistance and other features.Our products are meet the ISO9001 International Quality System.In addition to other various qualification certificates,our shoes also meet the European EN-20345 standard and Australia AS/NZS2210.3:2000 standard.There are S1,S1P,S1PSC,SB,S2,S3 and etc, standards.