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About product and suppliers:
        Alibaba.com offers 3,019 the metric system products. About 1% of these are access control system, 1% are water treatment, and 1% are water filters. 

A wide variety of the metric system options are available to you, such as steel, stainless steel, and plastic. You can also choose from free samples, paid samples. 

There are 3,014 the metric system suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Iran (Islamic Republic of), and Taiwan, which supply 97%, 1%, and 1% of the metric system respectively. 

The metric system products are most popular in Southeast Asia, North America, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 1,085 with ISO9001, 478 with Other, and 138 with ISO14001 certification.