Dongguan Wan Jiang Ling-car dealers Technology Center computer sewing refueling site include the following: a. Computer car red hole site, you need to add a colorless transparent sewing machine oil, keep in mind that these parts can only be added to liquid oil can not add solid oil, solid oil will block the hole, blocking the tubing, so that the oil line harden. Will damage the machine. II. Libra component parts and track parts, you need to add appropriate amount of solid butter. Because these parts wear, the amount of butter can play lubrication. Can detract from the machine wear. Play a protective role of the computer cars can be durable. Computer cars we need intensive care. This life will grow.