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        Alibaba.com offers 8,947 calling module products. About 1% of these are integrated circuits, 1% are pagers. 

A wide variety of calling module options are available to you, such as yes, no. You can also choose from black, white, and red. 

There are 8,947 calling module suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of calling module respectively. 

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