Mechanically a vape is undemanding: a lithium cell, a heating element, a reservoir and a wick, an airflow sensor to detect a draw, and a small microcontroller to manage power and cut-off. Everything that distinguishes one from another sits in a single subassembly, the atomisation core, and specifically in the coil. The old architecture is a resistance wire through cotton, which is cheap and tastes different on the last puff than the first. The one that took the market is a ceramic heating element, where a metal film is bonded to a porous ceramic substrate: more even heat, far better resistance to dry hits, more consistent flavour across a pod's life, and less leakage. That ceramic core is the reference design in this category, and the company that industrialised it is the reason this page is about Shenzhen.
The structure here is the inverse of most of this atlas. Normally a hireable house sits beneath brands that are larger and better known. In vaping the manufacturer is the giant: Smoore, founded in Bao'an in 2006, is the world's largest independent maker of vaping devices and components, was the first vaping company to list in Hong Kong, and supplies the closed-pod systems sold under other people's names through its FEELM platform while running CCELL for cannabis oil hardware. Its customers include tobacco majors with a hundred times its brand recognition. Around it, in the same district, sit the brands that built the consumer categories: RELX in closed pods, iMiracle with Elf Bar in disposables, IVPS with SMOK in open systems.
What decides commercial outcomes here is not engineering at all. It is legislation, and this category is being legislated faster than any other in this guide. The United Kingdom banned single-use disposables outright from 1 June 2025 across all four nations, with retailers given from October 2024 to clear stock; rechargeable and refillable devices remain legal. Belgium became the first EU member state to ban disposables in January 2025 and has a statutory flavour ban scheduled for 2028. France followed in February 2025. At EU level the Tobacco Products Directive still sets the baseline of a 2ml tank, a 20mg/ml nicotine ceiling and notification six months before a product reaches market, while its successor, TPD3, remains in pre-drafting consultation and realistically takes effect no earlier than 2028. In the United States the Premarket Tobacco Product Application is a barrier few products have cleared.
Then there is a rule from outside tobacco law entirely, which may matter more than any of it. From 18 February 2027 the EU Battery Regulation requires portable batteries in products placed on the market to be removable and replaceable by an ordinary user, the same provision covered on the handheld fans page. A single-use device with a sealed, non-replaceable cell cannot satisfy that by definition. Whatever tobacco regulators decide, battery law alone points the entire category towards rechargeable hardware with replaceable pods. Anyone still tooling disposables for European markets is building for a window that is closing on a date already published. Note the domestic asymmetry too, because it explains a lot about how these houses are organised: China restricted flavoured products in its own market while its factories continued producing them for export.
For export, compliance is the product. Beyond CE, UKCA, FCC, RoHS and UN38.3 for the cell, every market has its own regime: TPD notification per member state with six months' lead, MHRA notification in the UK, PMTA authorisation in the United States, and an accelerating patchwork of national disposable and flavour bans that no single certificate covers. Practical diligence looks different here than elsewhere in this guide. Ask which specific SKUs hold live notifications in which markets, ask for batch-level traceability and independent nicotine content verification rather than a factory certificate of analysis, and ask directly what the supplier's roadmap looks like after February 2027. A house whose answer is a disposable catalogue is telling you it has not read the battery regulation.