The MJ-NB pin type nano sand grinder series from Dongguan Grinding Equipment Co., Ltd. represents the most advanced wet mechanical nano grinding technology currently available. The entire grinding chamber is designed with all ceramic materials, and the optimized nanorod pin machine has higher efficiency and better grinding effect, especially for harder powder slurries, with a very narrow particle size distribution. This device can be equipped with corresponding cavity materials and mechanical seal materials for different oil-based and water-based slurries, with good versatility.