Nestled in the heart of Asia's technological hub, Shenzhen has become a global magnet for the e-cigarette industry. Factories bustle across the city, churning out millions of devices each year. From sleek pods to https://leaqnbp353531.dreamyblogs.com/37544578/shenzhen-s-vaping-hub-a-look-inside-china-s-e-cigarette-factories