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About product and suppliers:
        Alibaba.com offers 3,382 21 cartridge products. About 9% of these are toner cartridges, 7% are ink cartridges, and 1% are toner powder. 

A wide variety of 21 cartridge options are available to you, such as toner cartridge, ink cartridge, and toner powder. You can also choose from canon, hp, and sharp. As well as from re-manufactured, original, and compatible. And whether 21 cartridge is no, or yes. 

There are 3,384 21 cartridge suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Macau, which supply 98%, 1%, and 1% of 21 cartridge respectively. 

1 cartridge products are most popular in Southeast Asia, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 931 with ISO9001, 845 with Other, and 283 with ISO14001 certification.