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在北方技术交易市场正式开业和’95春季北方高新技术展览交易会开幕之际，石油天然气工程建设常设技术市场于1995年3月2日在北方技术交易市场信息发布厅举行首次科技信息发布会。石油行业6个单位的负责同志应邀发布了科技成果信息（参见封三照片）。中国石油天然气总公司工程技
At the opening of the northern technology trading market and the opening of the ’95 Spring North High-tech Fair, the permanent technical market for oil and gas engineering construction held its first technology information conference on March 2, 1995 in the Information Distribution Hall of the Northern Technology Exchange. Responsible comrades of the six units of the oil industry were invited to release information on scientific and technological achievements (see photo of the third seal). China National Petroleum Corporation