Epistone Comp-Semi Materials Company professionally manufacture and supply 2”, 3” and 4” epi-ready Sapphire, GaAs, and Ge substrate wafers. We also reclaim used Sapphire and GaAs substrates for saving your cost.

Our substrate wafers have excellent quality but very competitive low price. Please visit our website www.epistone.com/product.htm for more information.

We have large inventory for customers express order at the present time (price lists are available upon request). Typical epi-ready substrate samples are at hands for your trials, and can be sent to customer upon request. Please tell us your specification for epi-ready wafer, we can make right samples for you to use right away.

Thank you very much for your attention and support.