Zig Zag Spring Machine: A Cost-Effective Business Opportunity for Sofa and Mattress Factories
When people first hear the name “zig zag spring,” many of them feel confused. Why is it called zig zag? The answer is actually very simple. The spring wire moves in a repeated zig zag shape, creating a flexible support structure widely used inside sofas, sofa beds, recliners, and some mattress products. Today, zig zag […]