GSG (Gunter Seniconductor GmbH.) brings you Germany's technology at Asian's cost by assembling in Asia the wafer from Germany. Gunter's wafer went into production since 1960 gaining over 37 years of experience in making semiconductor wafer and got DIN-ISO9000-9004 approval and CECC 50,000 reliability test acceptance. Electrical error amounts to 10 ~ 50ppm only.