BV-2.5 is 1 copper wire +PVC sheath with a cross-sectional area of 2.5 square millimeters.
R = There are many soft conductors, which are divided into four types according to the national standard. How many did you count?
ZR-BVR-2.5 is a C-class PVC insulated flame-retardant flexible cord with copper core and a cross-sectional area of 2.5 square millimeters.
In addition, this kind of plastic wire needs CCC compulsory certification. Please see if it is available.
Other views:
1, brand: Although he doesn't know Nancun Cable, he is wearing an R. Is this fake?
2. Quality: Small factories need low cost. Generally, they don't order from Shanghai Futures. They can only find other channels, but they also want to develop. Therefore, the procurement and production are all selected according to the cost performance (fake ones are not necessarily fake, and there are many local brands).
3, the difference: small factories are more careful, wires: only from the selection of raw materials, insulation thickness of conductor section, annealing degree of conductor and so on. , there are more or less differences, of course, the price difference is "more or less"! ! !