We accept custom made spiral spring or constant force spring. The material can be spring steel or stainless steel for spiral springs.
Most of the constant force springs are made by SUS301 HV580.
We can also import constant force spring from USA, to offer you high quality product.
|7 x 0.15mm
|SUS301 SUS301 Hv580
|10.0 x 0.6mm
|8.0 x 0.5mm