This is Alan Yang from Epistone Comp-Semi Materials Inc. designs, develops, manufactures and distributes high-performance compound semi-conductor single crystal substrates. We are one of the the leading suppliers of Epi-Ready Sapphire wafer , GaAs wafer, InP wafer, and Ge wafer in the world. We also reclaim sapphire and GaAs wafers.
( headquartered in USA ,Production facility are used in ShenZhen, China ), We are the professional manufactures of Epi-Ready Sapphire wafers, GaAs wafers, InP wafers, and Ge wafers in the world , with the competitive price and reliable quality, our products sell well in both the domestic and oversea marketing
  1) 2-inch , 3-inch  , 4-inch   Epi-ready Sapphire wafers ?C/R/A-Plane with 200/330/430/500um thickness.
  2)  2-inch , 3-inch  , 4-inch , 6-inch  Epi-ready GaAs wafers with 325um to 675um thickness.
  3) 2-inch  , 3-inch  , 4-inch  Epi-ready Ge wafers with 325/500um thickness.
  4?2-inch  , 3-inch  , 4-inch  Epi-ready InP wafers with 325/425um thickness.
  5?Wafers Reclaim Service
  6?All wafer specifications are adjustable to meet customers' special requirements
  On account of our unique technology, the TTV?BOW and WARP of our wafers are all be controlled under 10um.The Ra of polished side can be controlled under 0.2nm
   further information Please log onto our website: www (dot) epistone (dot) com
   MSN: jxauygy (dot)126 (dot) com