一、案情简介１９９３年，经当地镇政府牵头，某供电局与当地镇企办、某营业所、信用社等共同协商，约定共同投资联营办钢铁厂。按约定，某供电局以为钢厂架设电力专线并配备相关电力设施（价值２００万元）作为投资，所占股份为２０％。该联营钢厂于１９９４年８月经工商部门 I. Introduction to the case In 1993, led by the local town government, a power supply bureau and the local township enterprises to do a business office, credit cooperatives and other common consultations agreed to jointly invest in joint-venture steel mills. According to the agreement, a power supply bureau assumed that steel mills should set up green power lines and equipped with relevant power facilities (worth 2 million yuan) for investment, accounting for 20% of the shares. The joint venture in August 1994 by the business sector