“Zero Tariff Is Not a Get-Out-of-Jail-Free Card”: Hainan’s Full Customs Closure—Boon or Trap for the Chemical Industry?

On December 18, 2025, Hainan Free Trade Port officially launched island-wide customs closure. Instantly, buzzwords like “zero tariffs,” “dual 15% tax rates,” and “open at the first line, controlled at the second line” flooded social media. For ordinary tourists, this means buying Parisian perfume in Haikou duty-free stores at Hong Kong prices; for tech firms, it’s a policy magnet for global talent and equipment. But for the chemical industry—a sector defined by high regulation, high risk, and capital intensity—Hainan’s customs closure brings not a simple “red envelope of benefits,” but a complex game where opportunity and landmines coexist.

On the surface, policies such as “zero tariffs covering 74% of tariff lines,” “duty-free entry into mainland China for goods with over 30% value-added processing in Hainan,” and “corporate income tax as low as 15%” seem to open a new door for chemical companies toward lower costs, higher efficiency, and global integration. Yet a deeper dive into policy details and industry realities reveals a stark truth: chemical products are precisely the focus of scrutiny under both the ‘Prohibited and Restricted Imports/Exports List’ and the ‘Import-Taxable Goods Catalogue’ (the so-called negative list for zero tariffs). The much-touted “zero tariff” may be nothing more than a mirage for most basic chemical feedstocks, and the promise of “free movement” has always been conditional when it comes to hazardous substances.

Zero Tariff? First Check If Your Product Is on the “Blacklist”

One cornerstone of Hainan’s customs regime is two critical lists: the List of Prohibited and Restricted Goods and Articles and the Catalogue of Import-Taxable Goods (i.e., the zero-tariff negative list). The former specifies what cannot enter or exit; the latter identifies goods that remain taxable even within the free trade port. And the chemical industry—especially categories involving flammability, explosiveness, toxicity, corrosiveness, or high environmental risk—is heavily targeted by both lists.

Take common organic feedstocks like benzene, toluene, acrylonitrile, or epichlorohydrin. While not outright banned, they are classified as hazardous chemicals and require multiple approvals under regulations like the Regulations on Safety Management of Hazardous Chemicals and the General Administration of Customs’ Special Provisions on Hazardous Chemical Oversight in Hainan FTP. More critically, these products are mostly included in the Import-Taxable Goods Catalogue—meaning even if imported from overseas into Hainan, they do not qualify for zero tariffs. The rationale is clear: the state enforces end-to-end control over hazardous chemicals. Allowing large volumes of duty-free hazardous stockpiling in Hainan—an area legally “outside customs territory but inside national borders”—could pose unacceptable safety or smuggling risks if materials leak into the mainland.

In contrast, the chemical-related categories truly eligible for zero tariffs are mostly high-end specialty chemicals, pharmaceutical intermediates, electronic-grade ultra-pure reagents, and carbon fiber precursors—products deemed “non-hazardous” or “low-risk” with high added value. For example, photoresists for semiconductors, OLED materials, or electrolyte additives for EV batteries can enter Hainan duty-free for R&D, repackaging, or small-batch production—if they’re not on the restricted list. These enterprises are the real beneficiaries of Hainan’s closure.

The table below compares policy treatment across different types of chemical enterprises post-closure:

Clearly, Hainan’s customs closure does not offer universal benefits to all chemical players—it selectively invites only those with “high technology, low risk, and high value-added” profiles. Companies hoping to import cheap crude oil or solvents duty-free to wage price wars will likely be disappointed.

“30% Value-Added = Duty-Free Entry into Mainland”? Great in Theory, Tough in Practice

Another widely hyped policy is that “goods processed in Hainan with over 30% local value-added can enter the mainland duty-free.” This is highly tempting for chemical firms—if they could import raw materials duty-free, manufacture high-value products in Hainan, and then sell nationwide without tariffs, wouldn’t that be a golden opportunity?

But the devil lies in the details: How is “value-added” defined? Who verifies it? How are costs allocated?

According to Hainan’s Interim Measures for Tax Administration of Duty-Free Goods with Processing Value-Added, companies must submit full bills of materials, process flows, and cost structures to customs, verified by third-party auditors to confirm the “local value-added ratio.” For chemical manufacturing, this is exceptionally complex. In a continuous reaction system, how much of the final product’s value comes from imported feedstock versus Hainan-based energy, labor, or technology? If raw materials account for over 80% of costs—as is typical in petrochemical derivatives—even deep processing may fail to reach the 30% threshold.

A more practical barrier is that Hainan lacks a complete chemical industrial ecosystem. There’s no large-scale refining complex, no specialized hazardous cargo terminals, no mature hazardous waste treatment infrastructure, and even certified explosion-proof electricians are scarce. Building a high-spec chemical plant here incurs far higher investment and operational risks than in the Yangtze River Delta or Pearl River Delta. A fine chemical company planning a facility in Yangpu admitted: “We ran the numbers—compliance costs for hazardous storage and logistics alone are 30% higher than on the mainland. Any savings from ‘zero tariffs’ get swallowed by the bottomless pit of safety compliance.”

Where Lies the Real Opportunity? Not in “Relocating Factories,” But in “Planting Outposts”

Does this mean chemical companies have no place in Hainan? Not at all. Savvy players already understand: Hainan’s value lies not in “manufacturing,” but as a “window” and “policy testbed.”

First, Hainan can serve as a regional headquarters and trade hub for ASEAN markets. Leveraging the “dual headquarters base” policy, Chinese chemical firms can establish international platforms in Hainan to coordinate exports, tech collaboration, and investments into Southeast Asia. Given ASEAN’s status as one of the world’s fastest-growing chemical consumption regions—and Hainan’s geographic proximity and policy connectivity—this can significantly reduce cross-border transaction costs.

Second, Hainan is an ideal testing ground for green and low-carbon technologies. Post-closure, Hainan will pilot carbon trading, green finance, and cross-border data flows ahead of the mainland. Chemical companies can deploy cutting-edge projects like CCUS (carbon capture), green hydrogen integration, or bio-based materials here—not only enjoying the 15% income tax rate but also building ESG assets for future nationwide scaling.

Finally, pharmaceutical and electronic chemical firms stand to gain the most. Boao Lecheng International Medical Tourism Pilot Zone has already imported 37 batches of zero-tariff drugs, creating steady demand for high-end APIs and formulations. Meanwhile, as Hainan develops data centers and EV testing bases, demand for ultra-pure solvents and battery materials will rise. These segments feature high value, low volume, and clearer regulatory pathways—perfectly aligned with Hainan’s “small but elite” industrial strategy.

Closure Is Not the End—It’s the Start of a New Rulebook

Hainan’s island-wide customs closure is far more than turning the island into a giant duty-free shop—it’s a profound experiment in institutional opening-up. For the chemical industry, it draws a clear red line: the era of extensive, high-risk, low-value models is over; only high-tech, green, globally integrated players will find footing on this new frontier.

Companies dreaming of quick profits through policy arbitrage will eventually crash into the iron wall of “controlled at the second line.” But those who truly grasp the essence of “open at the first line”—using the world’s highest standards to force their own transformation—may use Hainan as a springboard to dominate the entire Asia-Pacific market.

Zero tariff is not a get-out-of-jail-free card—it’s an entry ticket. And that ticket is issued only to those who are ready.