... quality and good service Control CableModel:KVV,KVVP,KVV22,KVVR,KVVP2(ZR series per your request) Standard: GB/9330.2-2008Rated voltage ... class A,B,C or D which is stipulated in GB/T 19666. Among the 4 class A is best, while ... common control cable. Type of the low smoke, low halogen, flame retardant cable: plus DDZA DDZB DDZC DDZD before the type of common control cable. Control Cable