Leather classification:
Raw leather: cowhide, goat skin, sheep skin, pig skin, raccoon dog skin, rabbit skin, fox skin, mink skin
Finished leather: shoe upper leather, shoe lining leather, clothing glove leather, sofa leather, car cushion leather, luggage leather, special/professional finished leather
Leather clothing: leather coat, leather jacket, leather hat, fashion, leather special/professional leather clothing
Fur products: fur plates, fur clothing, fur hats, fur toys, mink products, fox skin products
Leather accessories, leather hardware: molded sole, synthetic leather, heel, shoe last, shoelace, leather hardware accessories, special/professional leather accessories
Ball leather: leather basketball leather volleyball leather football special/professional leather ball
Standards and regulatory requirements:
GB/T16799-2008 Leather for Furniture
GB/T4689.21-2008 Test Method for Water Absorption of Leather
GB/T4689.22-2008 Leather - Determination of Air Permeability
GB/T4690-1984 Classification of finished leather parts
GB/T4689.20-2008 Test Method for Adhesion Fastness of Leather Coatings
GB/T 19940-2005 Method for the determination of hexavalent chromium ions in powdered chromium tanning agents
GB/T 19941-2005 Leather and Fur Chemical Tests - Determination of Formaldehyde Content
GB/T 19942-2005 Leather and Fur Chemical Tests - Determination of Prohibited Azo Dyes
GB 20400-2006 Limit of Harmful Substances in Leather and Fur
GB/T 22807-2008 Leather and Fur Chemical Tests - Determination of Hexavalent Chromium Content
GB/T 22808-2008 Leather and Fur Chemical Tests - Determination of Pentachlorophenol Content
GB/T 22886-2008 Leather - Tests for Color Fastness - Color Fastness to Water Staining
GB/T 22888-2008 Leather Physical and Mechanical Testing - Determination of Low Temperature Embrittlement Temperature of Surface Coatings
GB/T 22889-2008 Leather Physical and Mechanical Testing - Determination of Surface Coating Thickness
Test items
Physical performance testing:
Tensile strength, elongation, tear strength, tensile strength, shrinkage temperature, crack height, crack strength, leather apparent density, leather shoe trial wear inspection, sensory quality, peel strength, outsole to outsole adhesion strength, shoe folding resistance, wear resistance, heel bonding strength, upper (strap) pull-out strength, hook center bending stiffness, hook center hardness, heel hardness, coating folding fastness (room temperature/low temperature), sole leather folding fastness Water absorption, heat resistance, oil resistance, and fur flame retardancy
Chemical performance testing: pH value, hexavalent chromium content, formaldehyde content, prohibited azo dyes, odor, fur volatile matter content, leather moisture content and volatile matter, phthalate ester detection, isotherm (qualitative) detection, nickel release detection, carcinogenic dye detection, sensitized dye detection, lead detection, perfluorooctane sulfonic acid detection, cadmium detection, arsenic detection, free formaldehyde detection, formaldehyde content detection Tetrachlorophenol (artificial leather PU), pentachlorophenol (artificial leather PU), tetrachlorophenol detection, pentachlorophenol detection, dimethyl fumarate (DMF) detection, hexavalent chromium detection, prohibited azo dye detection
Color fastness: color fastness to rubbing, color fastness to water stains, color fastness to sweat stains, and color fastness to light exposure