UNPARALLELED LTD is one of the leading manufacturers and suppliers of custom granite surface plate in China. With abundant experience, we warmly welcome you to buy advanced custom granite surface plate made in China here from our factory. We also accept custom orders.
The Foundation of Perfection: UNPARALLELED® Precision Granite
In the world of ultra-precision, a fraction of a micron is the difference between a breakthrough and a failure. At UNPARALLELED Group, we believe that if you cannot measure it, you cannot produce it. Our precision granite components aren't just "stone"-they are engineered foundations. Crafted from exclusive UNPARALLELED® Black Granite with a density of ≈ 3100kg/m³, our bases provide the thermal stability and mechanical integrity that ordinary marble or low-grade granite simply cannot match. Whether you are building a semiconductor inspection tool or a high-speed PCB drill, our bases ensure your equipment performs exactly as designed, year after year.
Technical Specifications
| Feature | Specification |
| Material | UNPARALLELED® High-Density Black Granite (3100kg/m³) |
| Flatness Tolerance | Up to Nanometer Grade (Customizable) |
| Hardness | Shore Hardness > 70HS / Mohs 6-7 |
| Max Dimensions | Single piece up to 20m (L) x 4m (W) |
| Certifications | ISO 9001, ISO 45001, ISO 14001, CE |
| Inserts | Custom Threaded Inserts, T-slots, or Air Bearing Grooves |
| Standards Met | DIN 876, ASME, JIS, GB, BS817-1983 |
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Why UNPARALLELED® Stands Alone
- The "Walking Electronic Level": Our master technicians bring 30+ years of manual lapping experience. They don't just grind; they feel the stone to achieve sub-micron precision that machines alone cannot reach.
- Superior Thermal Stability: With a near-zero coefficient of thermal expansion, our granite resists warping in fluctuating environments, making it the gold standard for CMM and Optical Inspection.
- Military-Grade Production Environment: Produced in a 10,000m² constant temperature/humidity facility with 1000mm thick anti-vibration flooring.
- No Compromise Policy: We strictly reject the use of cheap marble. Our commitment is: No cheating, No concealment, No misleading.
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Application Scenarios & FAQ
Where Excellence is Required:
Semiconductor Manufacturing: Ideal for lithography and wafer inspection stages.
Metrology: The primary reference for Coordinate Measuring Machines (CMM).
Laser Technology: Stable platforms for femtosecond and picosecond laser cutting.
Frequently Asked Questions
Q: Why use Jinan Black Granite instead of Metal?
A: Granite is rust-proof, non-magnetic, and provides superior vibration damping. Unlike cast iron, it does not suffer from internal stress or "wringing."
Q: Can you install custom inserts?
A: Yes. We specialize in complex hole patterns and high-strength threaded inserts tailored to your engineering drawings.
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