Gaotang Kuoshi Precision Machinery Co., Ltd. is a standardized enterprise specializing in the R&D, production and sales of granite precision measuring tools and mechanical components. We have been certified by the ISO9001 international quality management system.

Located on the west side of Provincial Highway 316, Zhaozhaizi Town, Gaotang County, we enjoy unique advantages in raw material resources. The company is equipped with complete machining facilities, advanced testing instruments including electronic level meters and laser interferometers, and realizes computerized data processing. We have a team of high-quality and experienced employees.

Main Products:


Granite precision measuring tools: surface plates, straight edges, square rulers, V-blocks, parallel gauges, etc.

Custom granite mechanical components for precision instruments: working tables, guide rails, machine bases, etc.

Special-shaped processing services: drilling, slotting (T-slot/V-slot), metal insert inlaying and other customized processing on granite surfaces.


Our production and testing processes strictly comply with GB/T 20428-2006 Rock Surface Plate Standard and JJG 117-2005 Verification Regulation for Flat Plates. We can provide granite measuring tools and mechanical components produced in accordance with different national standards for global customers, as well as complete assembly and testing services for finished equipment.