About us
JINAN TMMT STONE is black granite quarry miner and professional precision metrology granite maker with a history of 5 decades.
In 1978, TMMT started granite surface plate as a pioneer in China. With continuous investment in black quarry, manufacturing equipment and test instruments, TMMT has 400 employees, own quarries, 3 factories. Located in Shandong (headquarter), Fujian and Inner Mongolia, and becomes the biggest precision granite maker in the world...
Standard&OEM Metrology granite
We produce granite surface plates, accessories and OEM machine bases, precision granite assemblies. Our metrology granite and precision custom granite meet or exceed customers’ required specifications and standards such as GGP-463C, ISO 8512-2...
MORE>Materials & Quarry
Precision granite for metrology is made from fine and medium grained stable, workable rock presenting a wear resistant surface, such as diabase gabbro-Jinan black, and Taishan black diamond.
Jinan black is well-known fine black granite for precision ...
