原上海延海机电实业有限公司。
   本公司以工程技术人员和技术工人为骨干，拥有高精度蜗轮副加工母机等50余台精切设备及14台（其中进口6台）先进的检测设备，生产YA3115系列少齿机（Zui少可加工3齿）填补了国内空白，属“上海市机电产品质量检测中心”监控和年鉴的产品，目前已制成YK3115（二轴联动）数控滚齿机（可加工鼓形齿轮）和YK2215数控弧齿锥齿轮铣齿机。
　　公司的品质管理体系，在2002年通过“波音验证公司”ISO9001?2000的标准认证。
　　公司年产百余台YA系列滚齿机，覆盖了渐江、江苏等160余家电动工具企业，并设立国内专业维修人员和维修点。
　　公司竭诚邀请国内外客商，共创未来。
代加工轴套、齿轮、机床主轴、高精度蜗轮副等零部件。
Shanghai YanHai Mechanical & Electrical Industry Company is a specialized manufacturer for Gear Hobbing Machine. With senior engineers and skilled workers as the backbone of the Company, we have more than 50 sets of machining equipments including high-precision worm machining tool. We also have 14sets of advanced inspecting & testing equipments (among them,6 sets were imported from Germany). Our series product YA3115 is a special-type gear hobbing machine for gears with fewer teeth, which filled a gap of gear hobbing processing within china.
　　Our products are under supervision of ”Shanghai Inspecting & Testing Center for the quality of Mechanical & Electrical product” and receive annual checkout from them.
　　Recently, we have developed YK3115(two axes act synchronistic) numerically-controlled gear hobbing machine, which can be used to machine drum gear and YK2215 numerically-controlled curved-tooth bevel gear.
　　We have a perfect quality-control system and got the certificate of conformity for ISO9001•2000 version in 2002.
　　The company manufactures more than 100sets of YA Series Gear Hobbing Machine every year In Zhejiang Province and JiangSu Province, more than 160 companies, who make electric-driven tool, have become our end-user. And we have set up service centers in the relevant regions.
　　We sincerely invite all the users domestic and abroad to visit our company and to jointly create the splendid future.