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About product and suppliers:
        Alibaba.com offers 166 gas detector pen products. About 44% of these are gas analyzers, 3% are alarm, and 1% are testing equipment. 

A wide variety of gas detector pen options are available to you, 

There are 84 gas detector pen suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of gas detector pen respectively. 

Gas detector pen products are most popular in South America, South Asia, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 25 with ISO9001, 7 with Other certification.