- Drilling in reinforced concrete for the purpose of wiring and
piping for air-conditioning, elecxtricity, telephone, gas and water
- Sampling of test core for concrete, rock and stone.
- Drilling of base holes for guardrail, fence post,and resin
anchor in concrete,rock-bed,etc.
- Drilling in stone, refractory bricks and ceramics,etc
- Drilling in reinforced concrete structure, asphalt road and