DongFang Instrument Factory, the the subsidiary company of China Aviation Industries. Our products include: 1. Preset/Fixed-Value Torque Wrench 2. Digital Torque Wrench 3. Torque Wrench Tester 4. Torque Screwdriver 5. Digital Force Gauge 6. Digital Force Gauge Tester 7. Torque Multiplier After researching various torque tools at home and abroad, as per the international standard, they are developed and produced based on military technology. These tools have the high accuracy, wide capacity, long life, stable function, which satisfied the requests of different customers. Because of the advantages and characteristics, they are widely used in the fields of the strict tight-parts of Threads like the aviation, aerospace, railway, ship, car, motorcycle, precise machine, home appliances, electric power, engine and engine, etc.