Bosch AFS 23-37 trimmer line for $0,1.

A simple and cheap option to replace the original line to the trimmer.
Engineering communications design:
Electrical;
Water supply;
Heating;
Ventilation;
Hardware and microcontroller automation.
Design, maintenance and automation of mining locations of any complexity. Using the heat of asics for domestic needs:
Air and liquid heating systems;
Pool heating;
Supply air heating of ventilation systems;
Heating of greenhouses and any other technical premises;
Hot water supply;
Excess heat discharge to the outside/ventilation system exhaust;
Various farm cooling systems;
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