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About product and suppliers:
        Alibaba.com offers 4,364 quarter factory products. About 1% of these are socks, 1% are training & jogging wear, and 1% are moulds. 

A wide variety of quarter factory options are available to you, such as ce, rohs. You can also choose from free samples, paid samples. 

There are 4,364 quarter factory suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of quarter factory respectively. 

Quarter factory products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 451 with ISO9001, 246 with Other, and 73 with ISO14001 certification.