As a barometer of key sourcing trends in China, the upcoming Intertextile Shanghai Apparel Fabrics fair is seeing such a surge in demand for denim that it has increased the size of its Beyond Denim hall by 25% to meet domestic demand.

Following the success of last year's denim zone, the newly designed and enlarged Beyond Denim hall at the upcoming show later this month will feature around 150 exhibitors from six countries and regions. In China, the latest denim products are increasingly popular as China's expanding middle and upper classes follow Western fashion trends, the event's organisers say.

Some of the highlights on display this year include examples of new wash innovations, the latest technologies, sustainable production practices and premium denim.

Functional fabrics are another featured highlight of the fair, with thermo-regulation, moisture wicking, increased durability, elasticity, and windproof properties. In the domestic market in particular, functional fabrics for sportswear, ladies' wear and men's wear are in high demand.

Toyobo Co Ltd from Japan will highlight new types of CERAM materials, which are produced by incorporating far infrared radiation ceramics into acrylic fibres with advanced injection technology. The resulting fabrics emit warmth to the wearer, and are of particular interest to retailers and sports-related companies.

Intertextile Shanghai Apparel Fabrics 2014 takes place from 20 to 23 October at the Shanghai New International Expo Centre, and will feature more than 3,800 international and domestic exhibitors in 15 halls. In addition to denim products and functional fabrics, accessories are also a highlighted product category this year.