China’s metal zipper manufacturers attach great importance to humanistic design.The development of puller technology is mainly aimed at preventing pull-out and anti-dropping of puller.This technology accounts for 7% of the total number of applications.The research and development of stop-piece technology is mainly based on comfort.For the purpose of this degree,this technology accounts for 3% of the total applications,and the technical category accounts for 4% of the total applications,including the zipper assembly and the upstream equipment of the zipper tape.The number of patent applications ranked first was waterproof zippers,reaching 9 items,far ahead in terms of quantity.