Шилэн лонхыг царцах процесс болон элс цацах үйл явцын …
Sandblasting is a work that uses compressed air as a power to push abrasives to the surface of the workpiece for processing. This is the so-called sandblasting, which is what we often call shot blasting. Because in the early days of shot blasting, sand was the only abrasive that could be …