Button Snap Pull Strength Tester is defined responsibility of garment manufacturer, make sure button, push-button and fixed accessories can fixed on garments suitable.

The GESTER GT-C39B Zipper Rotation Testing Machine is a highly specialized mechanical tester engineered explicitly to measure the torsional strength, twist tolerance, and torque degradation of zipper sliders and pullers. Supporting advanced interactive operational modes—including twist-off, constant angle, and constant load—it isolates the exact mechanical failure thresholds of slider bodies and pull-tab joints. Equipped with a touch-screen control panel and heavy-duty stainless steel fixtures, the GT-C39B ensures precise data logging to satisfy strict hardware-focused safety benchmarks including ASTM D2061, 16CFR 1500.51-53, and EN 16732.