HONG Kong and Singapore seek co-operation in their productivity promotion, despite the two economies being in competition in many other aspects. ''We track each other's development [in productivity promotion] to see what we can learn,'' Singapore National Productivity Board executive director Koh Juan Kiat said yesterday. ''We look at the challenges facing the productivity angle and try to share experiences,'' he added. Mr Koh is in Hong Kong to attend the five-day Asian Productivity Organisation Top Forum for Professional Service Organisations, hosted by the Hong Kong Productivity Council (HKPC). ''The two economies are facing the same challenges,'' said HKPC executive director Chan Siu-kam. They both needed to upgrade the skills of their labour to meet their societies' changing needs, he said. Mr Koh said Asian countries had been exchanging their views in productivity promotion for the past few years. China is a newcomer to the productivity movement. This year it set up 15 government subsidised productivity centres to promote productivity.