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About product and suppliers:
        Alibaba.com offers 5,119 or competence products. such as free samples, paid samples. 

There are 5,119 or competence suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of or competence respectively. 

Or competence products are most popular in North America, Central America, and South America. 

You can ensure product safety by selecting from certified suppliers, including 1,824 with Other, 797 with ISO9001, and 301 with ISO/TS16949 certification.