Chinese HPHT cubic press has been widely used for HPHT annealing IIa type natural diamond and lab grown CVD diamond. With temperature over 2300℃ and pressure above 8GPa, light brown from natural and CVD diamond can be removed to color-less (D-F range). 

Delivering turnkey HPHT treatment solution particularly for natural and lab grown CVD diamond at customer’s premises, including following aspects:

1）Optimize equipment configuration of HPHT cubic press for diamond color enhancement whitening;

2）Customer’s workshop foundation design and optimum layout of water and power supply;

3）Inside cell/chamber design including anvil and cube full dimensions for diamond color whitening;

4）Synthesis pyrophyllite cube supply for diamond color enhancement;

5）Installation and testing HPHT cubic press;

6）Operation of HPHT cubic press;

7）Teaching and training of customer’s engineers;

8）Technical support and maintenance.