... certificate 3.20 years 4 ways butterfly type, tri-glide for handbags,bag buckle,DS521#B(1 ... ,handles, cord locks, snap hooks, stoppers, D-ring, tri-glides, shoulder pads, wheels, logo patches, puller handle system ... 20 years' history.2>Occupy over 20,000 square meter of factory building.3>We are the ... Oscillation test, Tension test 4 ways butterfly type, tri-glide for handbags,bag buckle,DS521#B(1+3/ ...