(1) BV single plastic single strand hard wire
BV single strand hard wire, a single core wire with 1 copper wire, high hardness, not easy to change, also called hard wire. It is a commonly used wiring model in home decoration wiring.

(2) BVR single plastic multi-strand soft wire
BVR is a multi-strand soft wire, composed of multiple copper wires of uniform thickness, with low hardness and easy transformation. If the wiring pipeline is soft, BVR is more convenient for electricians to run the pipeline.
BVR wire is softer than BV wire, and it can be easily laid when multiple wires are run through the pipeline at the same time.

(3) BVV double plastic single strand
BVV double plastic single strand wire is made of 1 hard wire with double plastic sleeves. It is hard and not easy to bend. It is generally used as an open wire or wire trough.

(4) BVVR double plastic multi-strand wire
BVVR double plastic multi-strand wire is made of multiple soft wires with double plastic sheaths. It has low hardness and is easy to turn. It is generally used as concealed wire or electrical power cord.
BVVR wire is softer than BVV wire. When multiple wires are put into pipes at the same time, it can be easily laid.