Plate Spring
Description：Plate spring,Battery spring plate.
Technical information：
1. Material:
Brass.
2. Surface treatment:
None / Nickel plating / Tin plating.
3. Process:
Progressive Stamping---Progressive plating
Engineering difficulty：
1. No burrs at all;
2. Stamping and plating as strip feeder.
Remarks：
1. Tooling time: 13 working days
2. Production time: 12 working days
3. Usage: Power banks and chargers / Transportation Systems
