How much is the salary for refrigeration installation and maintenance?

Air conditioner installation is based on the number of units, usually 50 to 100. Maintenance workers usually earn more than 5,000 in the peak season (about 3 months). For light stalls, the salary can only be guaranteed, and for those without a guarantee, the salary can be less than 1,000. Usually, the good stalls can bring in more than 2,500 throughout the year. However, working in some small maintenance departments does not exclude the whole salary. Those with an annual calculation of 1500 to 1800 are helpless. Technology is not valuable, but the country is so big that there are high and low levels of technology and different business scopes. This is for reference only