Grand bits working with best TBM in all over the World.
Our products cover fields of tunnel shield, mining excavation, rotary cutting drilling, trenchless reaming guide drilling, well geothermal engineering bit, oil drilling and production, foundation pile machine engineering and so on. We insist combinng the development of products and market, and we design and manufacture products that meet the personalized requirements of customers according to their needs, so that we can provide the best solution and reduce the comprehensive activity cost of users with high quality products and professional services. We have established a complete domestic and international sales network, and our products have exported to the United States, South Africa, Brazil, Iran, Malaysia etc. through a variety of channels.
We have established and maintained long-term contacts with the industry-elites all over the world.