Lithium tantalate wafer

This is from Teraxtal technology corporation, the company is located in Science Park, Hsin Chu,Taiwan.
I would like to introduce part of my company products ” Lithium Tantalate, Lithium Niobate and Silica wafer”. We can provide 4 to 6 inch wafers with 0.2 um to 0.35 um in size and flatness is less than 35 um. I am looking forward to hearing from you and hope have opportunities for business.
Best Regards