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About product and suppliers:
        Alibaba.com offers 4,089 patent pen products. About 3% of these are ballpoint pens, 2% are promotional pens, and 1% are gift sets. 

A wide variety of patent pen options are available to you, such as ballpoint pen, pen holders. You can also choose from metal, plastic. As well as from promotional pen, office & school pen, and business gift. And whether patent pen is no, or yes. 

There are 4,089 patent pen suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of patent pen respectively. 

Patent pen products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 755 with ISO9001, 483 with Other, and 391 with GMP certification.