Powering Industrial Automation with Precision.

Tefulong (GREATORK): Precision in Motion.

We design and manufacture high-performance intelligent valve actuators and gearboxes. For over three decades, we have guaranteed quality and on-time delivery through total vertical integration in our 53,000m² Shanghai facility.

OF CRAFTSMANSHIP

38 Years

UNITS ANNUAL

PRODUCTION

PROFESSIONAL

ENGINEERS 

HOURS OF

SAFE OPERATION

COUNTRIES

SERVED 

Core Applications

· Pipeline emergency shutdown valves (ESD)

· Compressor station load protection systems

· Offshore platform explosion-proof control

Technical Advantages

· Explosion-proof certification (ATEX/CNEx)

· Low-temperature adaptation (-46℃)

· Solar-powered remote monitoring

Core Applications

· Nuclear plant reactor trip systems

· Hydroturbine guide vane control

· Gas turbine inlet guide vane regulation

Technical Advantages

· SIL3 safety certification (IEC 61508)

· Radiation-resistant version available

· Precision control (±0.1% accuracy)

Core Applications

· LNG terminal loading arm control

· Storage tank safety valve automation

· Emergency release systems for docks

Technical Advantages

· Cryogenic design (-196℃ capability)

· Corrosion-resistant materials (316L stainless steel)

· Satellite communication support

Core Applications

· Reactor feeding valve precise dosing

· Clean pipeline sterile control

· Solvent delivery system explosion-proof control

Technical Advantages

· Sanitary grade design (FDA certification)

· Dead zone-free easy cleaning structure

· ±0.05% repeatability accuracy

Core Applications

· Water plant flow regulation valves

· Wastewater treatment aeration systems

· Pump station remote control

Technical Advantages

· IP68 submersible rating (3 meters/72 hours)

· Low power consumption (solar compatible)

· Intelligent diagnostic algorithms

Core Applications

· Blast furnace gas recovery valve control

· Steel mill cooling water regulation

· Cement kiln damper positioning

Technical Advantages

· High-temperature resistance (550℃)

· Dust-proof design (NEMA 4X standard)

· Forced air cooling system

The Future is Electric, Automated, and Collaborative

Join Us. Let's

Create

Grow

 Succeed-Together

Partner: PetroChina Southwest Pipeline Kunming

Oil & Gas Transmission Branch Company

Product Solution: Electro-Hydraulic Actuator

Partner: Inner Mongolia Kedian Electronic

Technology Co., Ltd.

Product Solution: AVA Multi-turn Electric Valve Actuator

Partner: PipeChina West-East Gas Pipeline Phase III Shaanxi Project Department

Product Solution: AGas-Over-Oil Actuators

· Intelligent control with non-intrusive design

· IP68 protection for harsh environments

· 80-2,500Nm torque range

· High-precision positioning (±0.1%)

· Explosion-proof certification (ATEX)

· 100Nm-80kNm torque output

· Pipeline gas powered operation

· -46℃ low temperature capability

· Solar power compatible design