The outer surface is plated with copper, and the raw material of the core wire is mainly iron, which is usually used for residual wire and cheap network jumper wire. The transmission interval is very close, which is attributed to the worst of the network cables of the above four raw materials. The best method of detection is to test it with a magnet, which can usually be identified by a magnetic screwdriver.
四人一拍即合,决心合力伏妖,共同解决人界危机,拯救世间万物。一场正邪之战,就此展开......
希望现在作出解释还不晚,请越王明察。