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In Dayun Links, horizontally coping all kinds of questions with all of departments such as R&D, Supply Chain, Production, Engineering and QC to settle them down. Vertically serving to customers such as enquiry, function demo, training, logical service, QC check-up, QA, FQA and maintenance according to three procedures of Before-Sale, Middle-Sale, After-Sales so that we form efficient and Point-to-Point service system.