Qingdao Theory Electromechanical Technology Co.,Ltd ( hereinafter referred to as "Qingdao Theory")was founded in 2004 . We have evolved into an professional drivetrain and transmission system provider, providing solutions for modern powertrains of mechanical, hydrostatic, or electrically driven designs,starting from the production of power transmission component parts for European and American customers.
  Qingdao Theory has a complete organizational structure and quality management systems, and has successively passed three major system certifications: ISO9001, and ISO14001,IATF16949.
   Qingdao Theory has advanced modern enterprise management tools (ERP, PDM,WMS, etc.) introducing internationally advanced FMS flexible processing production lines, truss-type automatic processing lines and more than 150 sets of CNC machines; 6 automatic assembly lines, equipped with three-coordinate detector, roughness measuring instrument, profiler, high-precision pneumatic measuring instrument, Hardness tester, gear measuring instrument and more than 30 sets of advanced testing and inspecting equipment.
   Qingdao Theory has a professional R&D team with rich technical experience and professional knowledge, they constantly optimize and improve product designs to ensure that we can respond quickly to market changes and customer needs.
   We manufacture and supply high-quality travel drives, slewing drives, winch drives,cutter drives, transit mixer drives, twin shaft mixer drives, multiple disc brake, axle, machine tools spindle gearbox, two-speed planetary gearbox,custom drivetrain systems for both on and off-highway markets and finding application in agriculture, forestry, construction, mining, concrete, AWP, airport, marine & offshore, wind, machine tools, and special vehicles.    
   The planetary gearbox's quality and excellent service have been especially recognized by the well -known customers worldwide like JLG, Snorkel, Genie, and of course, including our famous customers in China such as Sinoboom, Zoomlion, XCMG, SanY.  The excellent planetary gearbox makes some contributions to customers' blossom in AWP business.
    In the precision CNC machining field, the parts top-quality have been approved by Bosch, ZF, Carraro; Lixil, Takigne, Sugastune, etc.
   Qingdao Theory has been committed to building an excellent drivetrain brand, striving to become a well-known manufacturer of planetary gearboxes, brakes, axles, and precision components machining of transmission and drivetrain. With more than 20 years of experience in transmission and drivetrain design and manufacturing, Qingdao Theory will provide you with customized gearboxes, brakes and axles solutions for any specific application.
  Qingdao Theory Team sincerely welcomes your ODM &OEM requirements. We will always provide you with excellent solutions and services. Let's make a success together.