CHINA'S Trade Minister painted a rosy picture of Sino-United States trade but showed no sign of conciliation on the country's stance on human rights on the eve of a major purchasing trip to the US. Minister of Foreign Trade and Economic Co-operation Wu Yi spelled out China's position on bilateral trade and human rights concerns in an interview with Xinhua (the New China News Agency) - a week before she leaves for the US with a trade delegation. Senior officials, representatives of major corporations and provincial leaders are to participate in what has been described as the largest Chinese trade and investment activity to be held in the US. It will coincide with the sixth meeting of the Sino-US Joint Commission on Scientific and Technological Co-operation, to be attended by another senior-level team led by State Councillor Song Jian. Xinhua said the two countries would establish new protocols and renew old ones for scientific and technological co-operation. According to the agency, the Trade Minister said bilateral trade and US investment in China had maintained the momentum of growth in recent years despite ''some problems''. The minister called on Washington to remove ''man-made obstacles'' to developing commercial ties, reiterating that linking trade with issues such as human rights would hinder US access to the China market. China's Most Favoured Nation (MFN) trading status, Ms Wu argued, was ''purely a trade issue'' that ''should not be entangled with issues'' unrelated to it. Ms Wu's trip to the US is likely to be soured by the controversy over China's iron-fist control over the activities of dissidents such as the house arrest of leading dissident Wei Jingsheng. She said: ''China has long opposed the practice of linking MFN status to human rights issues . . . the two sides should in no way let this non-trade factor stand in the way of furthering bilateral trade and economic co-operation. ''The United States should take positive and pragmatic steps to cast aside man-made obstacles and make joint efforts with China to push forward the bilateral trade and economic relations,'' Ms Wu said. Dangling the potential of the huge Chinese market before Washington, Ms Wu also called on the US administration to take other steps to improve ties. These included lifting restrictions on US technology exports to China and resuming financing of feasibility studies for US Trade Development Agency projects, risk guarantees by the US Investment Company for investment in China and preferential loans by the American Import Export Bank for Chinese construction projects. ''Such actions will further help tap the vast potential of China's imports from the US and US investment in China,'' Ms Wu said, suggesting failure to act would have a detrimental effect on US commercial interests. The report said China would offer some 800 investment projects to US firms at trade and investment symposiums from April 11 to 19 while seeking to buy US goods worth hundreds of millions of dollars. It also touted the eighth session of the Sino-US Commission on Commerce and Trade from April 13 to 14, which Ms Wu is to attend, as the most important meeting since the summit between Chinese President Jiang Zemin and US President Bill Clinton in Seattlelast year. Ms Wu also maintained that the US had recently reiterated support for China's bid to rejoin the General Agreement on Tariffs and Trade. , saying Beijing hoped Washington would ''keep its word''.