Custom High-Precision Black Granite Structural Components

At ZHHIMG®, we strictly utilize proprietary High-Density Black Granite—a natural material with physical properties that far exceed standard commercial marble or lower-grade stones used by smaller manufacturers.

•   Exceptional Physical Properties: Our granite features a density of approximately 3100kg/m³, providing the heavy mass required for superior vibration damping and structural rigidity.

•   Nano-Level Surface Precision: Leveraging over 30 years of manual lapping expertise, our master technicians achieve surface flatness and parallelism measured in nanometers—literally "hand-lapping" precision to the point where they are often called "walking electronic levels."

•   Unrivaled Scale & Speed: With a 200,000 m² facility, we can process single-piece granite components up to 20 meters in length and 100 tons in weight, maintaining the highest year-on-year tonnage output globally.

•   Certified Authority: We are the only manufacturer in the sector to simultaneously hold ISO 9001, ISO 45001, ISO 14001, and CE certifications.