The car lock is rusty and won't open, and the zipper of the clothes is not smooth. What should I do?

The lock should be lubricated frequently, so that it will not rust and the switch will be smooth.

Well-known lock factories such as Eiskola mostly use fully synthetic lock lubricants from Tiger hotolube or Krupp kluber. Fully synthetic base oil production, clear and transparent, colorless and tasteless, low temperature resistance, dust-free. Tao Bao has a 30 ml small oil bottle with a sharp mouth. Just drop a few drops, which is very convenient to use. The maintenance period is six months.

Mineral oil can't be used, because mineral oil has high viscosity and is easy to be contaminated with dust. It is also not suitable for pencil powder or black graphite lubrication, which can not lubricate internal parts and will also cause heavy metal and color pollution.