Qingdao Sanjian Sewing Thread Ind. & Trade Center is the most professional and largest polyester spun yarns manufactory in north China located in Qingdao. We specialize in producing polyester spun yarns and sewing thread with over ten year's manufacture and trading experience. So far, we have developed dramatically with a total one hundred thirty thousand spindles and twist spindles in our factory, and the monthly output is nearly 1000 metric tons from 20s to 60s. For a dyeing manufactory, the annual output is over 300 metric tons. With growing output, we do not only concentrate on quantity but also quality. We have a large quality check group, and a full set of quality check equipments are available in our technique support department. The twist, tenacity, count, nap, and knot of all randomly picked spun yarn would be tested during the production process. This QC group of peop

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