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About product and suppliers:
        Alibaba.com offers 419 auto refractor keratometer products. About 70% of these are other optics instruments, 40% are ophthalmic optical equipments, and 1% are raw cotton. 

A wide variety of auto refractor keratometer options are available to you, 

There are 439 auto refractor keratometer suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Indonesia, and Singapore, which supply 95%, 1%, and 1% of auto refractor keratometer respectively. 

Auto refractor keratometer products are most popular in Western Europe, North America, and South America. 

You can ensure product safety by selecting from certified suppliers, including 86 with ISO13485, 44 with ISO9001, and 32 with Other certification.