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682 chip timing system products are offered for sale by suppliers on Alibaba.com, of which access control card readers accounts for 38%, access control cards accounts for 14%, and other ics accounts for 10%. A wide variety of chip timing system options are available to you, such as iso 14443a, iso 18000-6c and iso18000-6b.You can also choose from abs, plastic chip timing system,As well as from rs232, ttl chip timing system, and whether chip timing system is oem, vanch, or acm.