Polyester monofilament 20D 30D raw white metal cops
There are many kinds of polyester monofilaments, including flame retardant monofilaments, triangular monofilaments, flat monofilaments, high shrinkage monofilaments, hollow monofilaments, cationic monofilaments, full extinction monofilaments, ultraviolet-proof monofilaments, PET monofilaments and nylon monofilaments.