- Repairs of generator, diesel generators, pump stations, well pumps, gas guns, drainage pumps, liquid fuel boilers, electric boilers, gas boilers, water heaters, pumps, liquid fuel and electric guns, circulating pumps, power tools, benzothieno (lawn mowers), air compressor, chainsaws, cultivators, tillers, welding inverters
- Installation of chemical water treatment, heating, water
- Sharpening chains