... 3, ISO9001, IEC Standard 4, Prompt Delivery 450/750 Heavy Duty Rubber Cable1, Standard: GB5013/IEC60245or according to customer’s requirements2 ... :YCHeavy-duty rubber cable with rubber insulation and sheathYQLight-duty rubber cable with rubber insulation and sheath YZmedium rubber cable with rubber insulation and ... retardant, Fire-resistant 105oC.10, Quality Certificates 450/750 Heavy Duty Rubber Cable