How to use litter-free gas for a whole month

In this video, we will explain how to produce methane gas from garbage for a longer period than before, with some additives in fermentation
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The following materials were used
1- Vegetables
2 _ Fruit
3_ Animal dung + soil
4 _ Rock salt
5 _ Ammonium + potassium

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Видео How to use litter-free gas for a whole month канала Net Help