Welcome to Zhengzhou, Henan. This isn't just a manufacturing hub; it's the Silicon Valley of diamonds.
Unlike CVD reactors which look like microwave ovens, HPHT (High Pressure High Temperature) requires massive industrial might. The "Cubic Press" machines you see above weigh tons and exert pressure equivalent to an overturned Eiffel Tower on a fingertip.
The "Six-Anvil" Technology
Chinese technology is unique. While the West focused on "Belt Presses" (Russian/GE style), China perfected the Cubic Press. This allows for:
- Larger Growth Chambers: We can now grow 10ct+ rough stones.
- 3D Heating Stability: This is why Chinese HPHT stones have superior D-E color consistency compared to CVD.
From Industrial Grit to Gem Quality
10 years ago, these machines made drill bits. Today, thanks to precision catalytic recipes, they produce VVS crystals that rival the best natural stones.
We organize factory tours for our VIP wholesale partners. Come see the presses in action.