Here's the information I was referring to: Suresh at the THM.

Expansion of operations and product portfolio

00:55:53 – Expansion of operations and product portfolio. I think, the two-inch indium phosphide and gallium arsenide line today, we have the ability to grow it to three inch or four inch capability as the business expands. And the cost to expand from two inch to four inch, which would effectively double 2.5 times the capacity, is not very high, about 1.6 million dollars to do a full upgrade.