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About product and suppliers:
            1,868 auto refractor keratometer products are offered for sale by suppliers on Alibaba.com, of which other optics instruments accounts for 48%, refractometers accounts for 3%, and medical optical instruments accounts for 2%. 

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

There are 1,070 suppliers who sells auto refractor keratometer on Alibaba.com, mainly located in Asia. The top countries of suppliers are United States, China, and Singapore, from which the percentage of auto refractor keratometer supply is 1%, 96%, and 1% respectively.