... from china type:YT24,YT28,YN30,YN30A,YN30E,YN27,YN27C,YN27T certificate:ISO9001,CE super air /petrol /electric rock drill from ... main engine weighing only 30kg. It is suited to work on high mountains, and places with ... suits the temporary projects that the machine has to be carried at any time and in any ... 45°. When turned vertically downward, it can drill to the maxim depth of 6m. Applications1. The ...