Specification: 25kg per bag and 1000kg per bag. It is mainly used for high performance polyamide engineering plastics, Specification:25kg per bag and 1000kg per bag. It is mainly used for high performance polyamide engineering plastics, the main raw material for nylon 1212, nylon 612, high-performance lubricant, high performance rust preventive, high-performance powder coating, hot melt adhesive, ...