1. Check the copper material of the wiring terminal, try the insertion and extraction force with the plug to see if it is appropriate, and then weigh it by hand to see if the socket is really a bit heavy. You can try using a magnet to see if it is copper plated on iron alloy or iron steel.

2. Insulation materials are important for the safety of switch sockets, but it is difficult for ordinary consumers to judge. It would be great if they could conduct a combustion test on their core components when purchasing. If not, from an appearance perspective, poor materials are very light to hold in the hand and do not feel compressed, which can easily cause scratches. Good materials generally have a hard texture, are difficult to scratch, have a tight structure after molding, and are heavy in weight. Good resin materials have the characteristics of flame retardancy, arc resistance, heat resistance, and hardness.