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About product and suppliers:
        Alibaba.com offers 2,420 intercom machine products. About 3% of these are video door phone, 2% are metal coating machinery, and 1% are elevator parts. 

A wide variety of intercom machine options are available to you, such as free samples, paid samples. 

There are 2,419 intercom machine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), France, and India, which supply 99%, 1%, and 1% of intercom machine respectively. 

Intercom machine products are most popular in Domestic Market, Mid East, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,253 with ISO9001, 734 with ISO14001, and 633 with OHSAS18001 certification.