Luen Thai Holdings is Hong Kong's largest listed garment firm, with 34,000 employees, revenues of around US$1bn and a flagship business that produces over 80m garments a year - as well as footwear and bags - from production bases in China, the Philippines, Indonesia, India, Bangladesh and Cambodia. In the first of two articles based on a conversation with just-style managing editor Leonie Barrie at the recent Prime Source Forum in Hong Kong, CEO Henry Tan calls for industry-wide collaboration in a bid to increase efficiency and offset rising costs in the apparel supply chain.