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 Please activate translate The following materials were used 1 Vegetables 2 Fruit 3 Animal dung + soil 4 Rock salt 5 Ammonium + potassium Any inquiry, please write it in the comments, and we will answer any question