Our Location
304 North Cardinal St.
Dorchester Center, MA 02124
Founded in 1996, we have deeply cultivated the superhard abrasives industry for nearly 30 years. Our rich experience in surface treatment allows us to solve the most complex grinding challenges.
Backed by a strong technical team, we collaborate deeply with top institutions like the Zhengzhou Abrasives Grinding Research Institute and Henan University of Technology for continuous innovation.
Equipped with state-of-the-art production lines and rigorous standardized processes, we ensure highly durable, stable, and qualified grinding tools for every single order.
We provide complete non-standard customization. Based on your specific machining needs, our engineers tailor the bond and grit to co-develop new products that perfectly match your equipment.

Zhengzhou Guantong offers a diverse and complete range of superhard abrasive products. Whether you need aggressive stock removal or sub-micron precision polishing, our Diamond and Cubic Boron Nitride (CBN) tools cover all your manufacturing needs.
From ceramic and resin bond grinding discs to double-sided and peripheral wheels, we provide highly reliable solutions for cutting, grinding, and polishing. Our extensive product line ensures that we can satisfy the multifaceted demands of the global abrasive industry.
Our customized superhard tools are designed to solve critical bottlenecks in advanced manufacturing. By significantly lowering grinding temperatures, preventing micro-cracks, and increasing tool life, we help industries achieve higher efficiency and precision.
Guantong’s products are widely and successfully applied in machining air conditioning compressors, automotive components, cemented carbide, precision ceramics, magnetic materials, and aerospace parts. We proudly contribute to the evolution of global precision engineering by delivering stable and cost-effective abrasive solutions.




Delivering high-precision Ceramic CBN wheels for camshafts and crankshafts. Optimizing cycle times and ensuring high surface integrity for auto parts.

Custom resin diamond grinding discs engineered to achieve Ra 0.01μm mirror finishes for advanced ceramics and cemented carbide cutting tools.