In the quiet, climate-controlled cleanrooms where the future of humanity is etched onto silicon wafers and the most sensitive aerospace components are verified, there is a silent, unmoving presence that makes everything possible. We often marvel at the speed of a femtosecond laser or the resolution of a coordinate measuring machine (CMM), yet we rarely pause to consider the material that allows these machines to perform with such impossible accuracy. This leads us to a fundamental question for any engineer or procurement specialist: Is the foundation of your equipment merely a structural necessity, or is it the defining factor of your success?
At ZHONGHUI Group (ZHHIMG®), we have spent decades proving that the answer lies in the latter. Most people in the industry see a granite surface plate or a machine base as a commodity—a heavy piece of stone that just needs to be flat. But as the ultra-precision industry moves toward nanometer-scale tolerances, the gap between “standard” granite and “ZHHIMG® Grade” granite has become a chasm. We are not just a manufacturer; we have become the synonym for the industry standard because we understand that in the world of sub-micron measurement, there is no such thing as “good enough.”
The journey toward true precision begins miles underground, in the selection of the raw material itself. It is a common, and frankly dangerous, practice in the industry for smaller factories to substitute genuine high-quality granite with cheaper, porous marble to save on costs. They paint it or treat it to look like professional black granite, but the physical properties tell a different story. Marble lacks the density and stability required for high-end metrology. Our commitment to the “No cheating, No concealment, No misleading” promise starts here. We exclusively use ZHHIMG® Black Granite, a material characterized by an extraordinary density of approximately 3100kg/m³. This density is significantly higher than that of most black granites found in Europe or North America, offering superior physical stability and a remarkably low coefficient of thermal expansion. When your base is denser and more stable, your machine’s calibration remains true, even when the environment around it shifts.
However, having the best stone in the world is only half the battle. To transform a massive block of granite into a precision component requires an infrastructure that few companies on earth can match. Our headquarters in Jinan, strategically located near the Qingdao port, is a testament to this scale. Spanning over 200,000 square meters, our facility is designed to handle the giants of the industry. We are talking about the ability to process single-piece components up to 20 meters in length, 4 meters in width, and 1 meter in thickness, weighing as much as 100 tons. This isn’t just about size; it’s about the precision we maintain at that size. We utilize four ultra-large Taiwan Nan-Te grinding machines, each representing an investment of over half a million dollars, to achieve surface flatness across 6-meter platforms that most shops struggle to achieve on a desk-sized plate.
One of the most overlooked aspects of precision manufacturing is the environment in which the work is performed. You cannot produce a nanometer-grade surface in a standard factory environment. At ZHHIMG®, we have constructed a 10,000 square meter constant temperature and humidity workshop that is an engineering marvel in its own right. The floor itself is poured with 1000mm of ultra-hard concrete to ensure zero deflection. Surrounding this massive slab is a series of anti-vibration ditches, 500mm wide and 2000mm deep, designed to isolate our work from the tremors of the outside world. Even the cranes overhead are silent-type models to prevent acoustic vibrations from interfering with our measurements. Inside this fortress of stability, we also maintain specialized cleanrooms specifically for the assembly of granite components for the semiconductor industry, simulating the exact environments our clients operate in.
“If you cannot measure it, you cannot produce it.” This philosophy, championed by our leadership, is the heartbeat of our operation. It is why we are the only company in our sector to simultaneously hold ISO 9001, ISO 45001, ISO 14001, and CE certifications. Our metrology lab is an arsenal of world-class technology, featuring German Mahr indicators with 0.5μm resolution, Swiss WYLER electronic levels, and British Renishaw laser interferometers. Every piece of equipment we use is calibrated and traceable to national and international standards. This scientific rigor is why we are trusted by the world’s leading universities—like the National University of Singapore and Stockholm University—and national metrology institutes across the UK, France, the USA, and Russia. When a client like GE, Apple, Samsung, or Bosch comes to us, they are not just buying a component; they are buying the certainty of our data.
But even with the best machines and the most advanced sensors, there is a limit to what technology alone can achieve. The final, most elusive layer of precision is achieved by the human hand. We are immensely proud of our workers, particularly our master lappers. These artisans have spent over 30 years perfecting their craft. They have a sensory relationship with the stone that defies digital description. Our clients often refer to them as “walking electronic levels.” They can feel a deviation of a few microns through their fingertips and know exactly how much material to remove with a single stroke of the lapping plate. It is this marriage of ancient artisanal skill and futuristic technology that allows us to produce 20,000 sets of precision beds per month while maintaining the highest quality standards on the planet.
Our products are the silent engines behind a vast array of modern industries. You will find ZHHIMG® granite bases in PCB drilling machines, CMM equipment, and high-speed femtosecond laser systems. We provide the stability for AOI optical detection systems, industrial CT scanners, and the specialized coating machines used in the production of next-generation perovskite solar cells. Whether it is a carbon fiber precision beam for a bridge-type machine or a mineral casting for a high-speed CNC, our goal is always the same: to promote the development of the ultra-precision industry.
As we look toward the future, we remain committed to our vision of being a world-class enterprise that is both trusted and loved by the public. We don’t see ourselves as just a vendor to companies like Siemens, THK, or Hiwin. We see ourselves as their thought partners. We are the ones who dare to be first, the ones who have the courage to innovate when the industry says a certain level of precision is impossible. From our 3D printing of precision components to our work with UHPC (Ultra-High Performance Concrete), we are constantly exploring new materials and methods to ensure that the foundation of the world’s technology remains as unwavering as the granite we forge it from.
Post time: Dec-19-2025