What changed was not another policy shock. It was the recognition that each hub now carries a distinct, priceable risk. The companies moving fastest are separating those risks deliberately, allocating functions to jurisdictions best able to absorb them.
The island implemented closed customs operations, functioning as a single customs territory distinct from the mainland. Goods enter duty-free. Processing occurs under codified rules. Products may enter the mainland under tariff treatments specified in advance.
For the first time, companies can model China market access with legal clarity inside a Chinese jurisdiction. The value is not cost reduction. It is certainty, at a time when routing through Hong Kong or third countries carries rising policy risk.
For firms where China accounts for 35% to 50% of revenue, tariff changes swing margins by double digits, and products require mainland regulatory approval but need not be manufactured inside the mainland customs territory.
Medical device manufacturers can complete final assembly in Hainan, securing zero-tariff treatment on imported components while preserving mainland access. Premium goods firms can shift China market packaging to capture tariff savings while meeting compliance requirements. Automotive suppliers can consolidate component processing to reduce exposure to finished goods tariffs.
“[…] It is creating redundancy for one function, processing and market access for China-destined goods, that previously relied on external gateways vulnerable to policy shifts beyond Chinese control.”
https://asia.nikkei.com/opinion/hainan-breaks-apart-the-hong-kong-singapore-two-hub-model