Because it does not use RC cable channel, it is buried, but also from a wide range and large, the results met the rainy season the water will always be friends, you can not afford to smoke
Because it does not use RC cable ditch, it is directly buried, distance is a large range and very large, the result of the rainy season is always water, you can not pump
Because it doesn't use RC cable trench, it is directly buried, and the distance is large and large, so it will always be water in rainy season, you can't pump it out<br>