上海五金机械总公司是一家以全国调拨和市内批发为主体的国有大型专业批发商业企业。（以下简称专业批发企业）在国家计划经济向市场经济过渡过程中，遇到了很大困难，出现了流通功能衰退、经营规模萎缩、经济效益滑坡三大困境。近年来，专业批发企业通过深化改革、更新观念、 Shanghai Hardware Machinery Co., Ltd. is a state-owned large-scale professional wholesale business enterprise with national distribution and citywide wholesale as its main body. (hereinafter referred to as “professional wholesale enterprise”) encountered great difficulties in the transition from a state-planned economy to a market economy, and there were three major difficulties: the decline of the circulation function, the shrinking of the operating scale, and the decline in economic efficiency. In recent years, professional wholesale companies have deepened reforms and updated concepts.