Filament SBU is originally established in 1970, after 35 years operating, developing and transforming, this division is currently subdivided into POY and HDI teams. And producing POY, SDY, DTY and HDI respectively. Filament SBU owns 4 production factories, including 51 production lines for POY, 25 lines for HDI, 67 lines for DTY and one research and development unit. There are about one thousand employees in this division. In average, workers monthly production capacity is 9,500T POY, 500T SDY and 3,500T DTY, in total of 17,000T, NT$9 billion dollars.

Following the dramatic market change in recent years, Filament SBU focuses on creating values and segmenting markets to maintain competitive advantages. Transformation has been started since 10 years ago, not only by entering industrial fabric market but also by upgrading products from general specification to specialization in functional and eco products.

Filament SBU currently produces more than 150 types of products, mainly for textile use or industrial use. Industrial use products can be further divided into nano woven, industrial fabrics, rope, filter, geotextile etc. Textile use products contain successfully developed micro fiber, and functional eco fiber type such as quick-dry fiber, anti-bacteria fiber, far infrared fiber, UV-cut fiber, fine hollow warmmax health related fiber, flame retardant fiber and Sorona PTT fiber solely authorized by US Dupont as well as the PLA eco fiber authorized by Natural work. The products above have been actively promoting in both domestic and overseas markets with positive feedbacks.