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About product and suppliers:
        Alibaba.com offers 10,362 glass tube screw cap products. About 81% of these are bottles, 10% are test tube, and 1% are packaging tubes. 

A wide variety of glass tube screw cap options are available to you, such as free samples, paid samples. 

There are 10,362 glass tube screw cap suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of glass tube screw cap respectively. 

Glass tube screw cap products are most popular in North America, South America, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,268 with Other, 666 with ISO9001, and 68 with ISO13485 certification.
        
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