Syna Fiber Delijan began operations in 2007, producing solid polyester fibers in Delijan Industrial Estate with an annual capacity of 1,300 tons. Production of cotton-type and hollow fibers began in 2009. In the next expansion phase, the company began manufacturing various solid polyester fibers on state-of-the-art production lines in 2011. With an annual capacity of 100,000 tons of virgin and recycled polyester fibers, it became Iran's largest polyester-fiber manufacturing complex.

Syna Fiber Delijan is one of the group's flagship companies and a leading Iranian manufacturer of cotton-type polyester fibers and hollow conjugated fibers. Its portfolio includes specialized virgin and recycled polyester fibers. The company focuses on high-performance fibers designed to meet the evolving needs of textile, spinning, bedding, furniture, and technical-application manufacturers. By combining advanced production technologies with rigorous quality control, Syna Fiber Delijan is recognized as a trusted supplier in domestic and international markets.

The company's continuous investment in product development reflects the group's commitment to innovation and customer-focused engineering. It has been recognized for quality standards, industrial excellence, and export performance, earning distinctions including National Exemplary Export Unit on three occasions, Provincial Exemplary Unit, and Leading Entrepreneur.

In addition to supplying Iranian industries, the company exports its products to countries in Asia, Africa, and Europe.

The company is an active member of the Association of Textile Industries of Iran and the Iran Recycling Industries Union.