The complete requested range of epitaxial deposition from one monolayer to tens of microns is available integrating LP-MOVPE and LP-VPE into wafer fabrication. Uniformity across 2 inch wafers for thickness, composition, and doping show a variation of less than 2 %. Electrical properties of the 1014 cm−3range and less for background doping, carrier mobilities of 210,000 cm2/Vs for AIGaAs and 190,000 cm2/Vs for GalnAs, both HEMT structures, are achieved. FWHM of 3.4 meV and 18.6 meV for 10 nm and 2 nm GaInAsP wells have been measured. GaAsP layers including a “graded” layer reveal FWHM of 15 nm. A new model for the understanding of high growth rates in the hydride system is demonstrated.