*Name
Company
Address
Tel
*Phone
*E-mail
*Message
File upload1
File upload2
File upload3
File upload4
File upload5
*Spring type
*Usage
*Others
*Demand/Estimated Annual usage
Material
End coils ground
Surface treatment
Please advise other surface treatment
Working Temperature
Salt Spray Test
Fatigue test
其他
Choose the unit here
L1
L2
Stroke
F1
F2
k1
k2
k3
O.D
I.D
Wire dia.
Free Length
Travel
Solid Length
Rotation Direction