The thickness of the inner core of countries have certain requirements, but not very strict. But a lot wrong, just a little small, generally with seeing out the error. Length, some countries do not have mandatory fight meters, communication cable companies, but there are many manufacturers also played meters, hit the meter is not necessarily a national standard, but the general GB generally do not fight meters. Non-target fight meters it is just a means. The state is absolutely necessary to have a certain logo on the wire, will not exceed 500mm next will have the same identity play out, the above products are generally trademark, manufacturer name, performance standards and other common models VV said: PVC insulated ( The first V), PVC jacket (second V) YJV22 said: cross-linked PVC insulated (YJ), computer communication cables, PVC jacket (V), the communication cable sales price, steel armor (22) model plus "ZR" or "FR" for flame retardant cable (wire). Plus "L" for the aluminum wire model is relatively simple: BVV-- PVC insulated and sheathed copper core wire, communications cable, BV-- core PVC insulated copper wire, BVR-- PVC insulated copper hearted line, BX-- rubber insulated copper core wire, RHF-- chloroprene rubber copper conductor cord. Communications cable company _ _ Anhui Communication cables provided by the Anhui Global Global instrument cable Limited. Anhui Global instrument cable Limited (www.ahqqtyb.com) strong, credible, in Chuzhou temperature instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead global Anhui into the brilliant pass and you work for a better future!