Material: spring steel, carbon steel, stainless steel, music wire, alloy steel, etc.

Wire Diameter: 0.2mm - 20mm

Surface: usually oiled, shot peening, galvanization, nickel plating, chroming, powder coating, etc.

Technical parameters & procedure:

material, wire diameter, outer diameter, inner diameter, free height, pitch, coils, etc. or technical drawing.

The technical details and procedure are different based on different springs requests.

Packing: usually by cartons. We can do according to buyer's requests.

QC/quality control:

We passed ISO9001:2008 international quality system.

Before producing, we have confirmed technical drawing and approved samples. And we have pre-production meeting.

When producing, we checked every 15 minutes for every steps by professional.

Before packing, we tested and checked all products. If OK, will packed.