Shenzhen has rapidly transformed into a/the/this global epicenter for the vape industry. Nestled/Huddled/Squeezed within its bustling metropolis are factories that churn out millions of vaping devices every day, https://blanchekgvb843494.wikiexcerpt.com/3955867/shenzhen_s_vapor_hub_inside_china_s_vape_factories