Precision Granite Reference Plate: The Definitive Foundation for Ultra-Accuracy

This reference plate is crafted exclusively from our proprietary ZHHIMG® Black Granite, a material chosen for its superior physical characteristics that surpass even standard European and American black granite.

●   Exceptional Density: Our granite boasts a high density of approximately 3100 kg/m³. This high mass minimizes external vibration transmission and thermal effects, ensuring the platform’s stability during critical measurements. We take pride in our commitment to using only the highest quality stone, standing firmly against the deceptive use of lower-quality marble by lesser manufacturers.
●   Superior Stability: The natural aging and stress-relieving process of our high-density granite guarantee virtually zero creep or internal dimensional change over time, offering a service life measured in decades.
●   Thermal Inertia: Granite’s inherently low coefficient of thermal expansion makes it an excellent thermal buffer, crucial for maintaining accuracy in temperature-controlled environments like our 10,000 m² Constant Temperature and Humidity Workshop.
●   Non-Magnetic and Corrosion-Free: Unlike metallic reference standards, our granite is non-magnetic and inert, eliminating the risk of magnetic interference and surface corrosion—perfect for cleanroom and precision electronic environments.