| Material | Carbon steel, alloy steel, stainless steel, spring steel and bronze or as you request |
| Wire diameter | 0.08mm-20mm |
| Outside diameter | Above 1mm |
| Length | The overall length of a spring in the unloaded position |
| Total coils | The total number of coils including the active coils, the top and bottom ends |
| Active coils | The coils which are free to deflect under a force. |
| Load type /Load | Torsion /Our computer program can assist you on the load design |
| Type of ends | Straight/short hook/double torsion/hinge/straight torsion/special |
| Direction of coils | Left/right |
| Surface treatment | Nickel / Zinc / Gold / Silver / Tin / Chromium / Yellow Zinc / Oxide black or Customizable etc. |
| Equipment | Advanced CNC computer spring machines with high precision and efficiency, high quality heat treatment and testing machine |
| Professional | Experienced engineers and technicians; Skilled Workers |
| Application | All kinds of cars, machinery, home appliance, electronic products, electric appliance, stationery, computers, power switches, miniature switches, architecture, commodity and A/V equipment, hardware and plastic molds, sports equipment and gifts, and more |
| Shipment | Express & air freight is preferred / sea freight/ as per customized specifications |