THE Hongkong Productivity Council (HKPC) is urging more trading companies to obtain ISO 9000 accreditation. It said Shun Hing Technology Co had recently obtained the certification, the first in the trading sector of office automation equipment, professional audio video equipment and office furniture. The company is the territory's sole distributor for products under the National and Panasonic brands. In the past the qualification had been obtained mainly by manufacturers rather than firms in the service sector. ISO 9000 is a set of management standards designed to ensure efficient operation and quality products or service. Company managing director Terrence Chan Ting-kwok said a higher level of satisfaction had been reported from its customers since the company moved towards the ISO 9000 standard in the middle of last year. ''We've received more letters of satisfaction from customers since then,'' said Mr Chan. A difficulty in adapting a system to meet ISO 9000 demands was the interpretation of the requirements involved, especially as the standards were tailored more for the manufacturing rather than the service industry, he said. Another task was getting staff to accept the system, he said. Edmund Sung Shiu-lun, head and principal consultant for the quality and management consultancy division of the HKPC, said: ''Hongkong's industry is being transformed from manufacturing into service. That's why it's important for the service sector such astrading companies to get ISO 9000 to raise Hongkong's quality image.'' Mr Sung said some companies failed for various reasons to get the accreditation. ''The commonest reason is that they chose a bad consultant, thus wasting a lot of time without getting much in return,'' he said. ''Even big consultant companies with a reputation cannot always maintain their standards as their turnover is very high,'' he added. Some companies failed to obtain the accreditation because they did not understand the ISO 9000 thoroughly. or did not make it a priority, he said.