Waterproof effect: Through grouting agent injection, fill the gap between the drilling hole and the soil layer, improve the density of the soil layer, so as to prevent water from entering the underground project through the soil layer.
PVC Compact ball valves is on/off valve, the design is very simple but effective. The size can be offered from ½ through 4 diameter. Connection styles are either socket or threaded.
High payload drone integrates the advantage of being effective, having good results and using low budget. Under such mode, the high payload drone can carry 10 kilogram anti worm and plant disease liquids to well protect the flora.