上海高强度螺栓厂有限公司（原上海先锋螺栓厂），公司隶属上海集优机械股份有限公司，创建于1939年，1951年注册“狮子牌”产品商标，并荣获上海市著名商标。 企业自五十年代以来，一直从事高强度螺栓开发和生产（M10~M100规格的高强度螺栓和螺母），可按国内外标准以及非标要求制造各种型式和性能等级的高强度紧固件，是国内经营历史最长和生产能力居前的高强度紧固件专业生产企业。

Shanghai High Strength Bolt Factory Co., Ltd. (formerly Shanghai pioneer bolt factory), the company belongs to the Shanghai Ji You machinery Limited by Share Ltd, founded in 1939, in 1951 registered "Lion brand" product trademark, and won the famous brand of Shanghai city. Since 50s, the enterprise has been engaged in the development and production of high strength bolts (M10~M100 specifications of high strength bolts and nuts). It can make various types and performance grades of high strength fasteners according to domestic and foreign standards and non standard requirements. It is the professional production of high strength fasteners with the longest history and production capacity in the country. Enterprises.