A looming challenge for all the market leaders is likely to be fast-developing chinese upstarts. Many of these companies have until receently made shoes on contract for the market leaders.And while the vast majority still make unhip,low quanlity shoes and clothing.a handful are coming on strong. Anta based in Fujian province.and Qingdao based Double Star both outsell Nike adidas and Lining in volume though their prices are a fraction of what the leaders charge. Anna is also sponsoring the china Baskeyball assn. for the second year running. which will raise its profile.