1. Our company started in 2009 and has 18 patents. The company's factory can design products as you need.

2. Components and Parts: Hollow Grouting Rock Bolt Soil Supporting Anchor Drill Bit Grout Self Drilling Coulper Coupling Plate Mould Nut Expanding-shell Anchor Rod Bar.

3. Application Area: Hollow Grouting Bolt or Rock Soil Bolt is widely used in railway, tunnel for slope pre-support, mining, coast, building foundation, road reinforcement, water conservancy projects and geological faulty treatment.