This standard specifies the terms and definitions, classification, basic and additional requirements, identification and information provided for protective footwear. This standard applies to protective footwear that protects the wearer's feet and legs from hazards in the work area. This standard does not apply to protective footwear without insoles and insoles or without insoles but with removable insoles.
GB 21147-2007 Referenced Document
GB/T 20991-2007 Test methods for personal protective equipment shoes