Want to implement sustainable development PLC

Home air conditioning is very simple. Anyone who knows common sense of circuits can learn to repair air conditioners outside in 1 day. Learn to repair the air-conditioning computer board, and be a little level. The central air conditioner is a little annoying, let's see if it is hot or warm.

If you want to find a job, you'd better learn the optics of central air conditioning. Civil air conditioning is useless. It is not difficult to learn central air conditioning, but also to test refrigeration and low pressure.

Civil air conditioning is generally a solo project. If you can become famous, you can earn 10000 with your eyes closed for a month, depending on how dark your heart is. Learn to repair computer boards, earn more, repair air-conditioning computer boards, and repair everything else.