Seoul foreign brands mainly export lamp beads rarely sell chips at present do not see with Seoul chip, chip Taiwan chip leader! At present, the high-end chips on the market, SAN An chip domestic leading enterprises with high performance, stable and cost-effective production, comprehensive comparison without talking about the price of the same grade and size of the chip wafer is better. Comparatively speaking, the price of the wafer compared with the same level of SAN 'an has almost doubled.