bonnell spring use high quality carbon steel and non woven material,bearing the load independently,favorable price

 bonnell spring description

1.wire diameter:1.2mm-2.4mm

2.height:8cm-23cm

3.size:based on your requirement

4.material:steel and non-woven

5.application:used for mattress

6.specility:with heat treatment,enhance elasticity

mattress pocket spring coil unit zone pocket spring