Scientific research high-purity screw metal screw threadwireringpan diameter 1.0mm-5.0mm can be customized

Color classification: high pure silk 0.5mm* 1m, high pure silk 0.8mm* 1m, high pure silk 1.0mm* 1m, high pure silk 1.5mm* 1m, high pure silk 2.0mm* 1m, high pure silk 3.0mm* 1m, high pure silk 4.0mm* 1m, high pure silk 4.0mm* 1m