Haikou Storage Container Export Agent: Common Issues and Solutions for Vietnam Market

Market Status and Common Challenges of Storage Container Export from Haikou to Vietnam

In 2026,Haikou Port,as an RCEP regional logistics hub,recorded a 27% year-on-year growth in storage container exports to Vietnam in the first 10 months.The demand for standardized steel storage containers and foldable plastic storage containers driven by the three newly built e-commerce warehousing centers in southern Vietnam and the expansion of manufacturing enterprises in central industrial zones has directly boosted trade volume.However,many local manufacturers in Haikou report that Vietnam Customs’ requirements for special equipment certification of storage containers and tariff classification rules often lead to 3 to 7 days of port detention,and even return of goods due to document discrepancies.

For example,Mr.Zhong from a steel storage container enterprise in Haikou exported 150 storage containers to Ho Chi Minh City,Vietnam at the end of 2025.He used China’s domestic 3C certification to replace the CB certification required by Vietnam,resulting in 5 days of customs detention and a demurrage charge of 18,000 yuan alone.Another enterprise had its tariff raised from 4% to 8% due to an incorrect commodity code on the RCEP Certificate of Origin,paying nearly 20,000 yuan in extra costs.These problems essentially stem from enterprises’ unfamiliarity with the *Safety Specifications for Warehousing Equipment* and *RCEP Tariff Concession Rules* updated by Vietnam in 2025,as well as the lack of targeted agency service support.

Core Service Value of Zhongshen for the Vietnam Market

Zhongshen has been engaged in foreign trade agency for over 20 years.For the demand of storage container export from Haikou to Vietnam,we prioritize "policy adaptation" as our core focus.Instead of simple document handling,we predict Vietnam’s policy changes in advance to help enterprises avoid hidden risks.For example,in 2026,the Ministry of Industry and Trade of Vietnam requires that storage containers be marked with the "weld strength test report number".Zhongshen included this requirement in the document pre-review process 3 months in advance.At present,the document rejection rate of storage containers exported to Vietnam under our agency has dropped from the industry average of 15% to less than 2%.

Breakdown of Service Modules for Storage Container Export from Haikou to Vietnam

I.Document Preparation: Adapt to Vietnam’s Special Equipment Certification Requirements

The *Safety Specifications for Warehousing Equipment* updated by the Ministry of Industry and Trade of Vietnam in 2025 clearly stipulates that storage containers exported to Vietnam with a load capacity exceeding 500kg need to provide CB certification recognized by the International Electrotechnical Commission (IEC),instead of the commonly used domestic 3C certification.Meanwhile,the commodity code on the RCEP Certificate of Origin must be consistent with the code 84798990 updated by Vietnam Customs in 2026,otherwise tariff concession cannot be enjoyed.

Solutions provided by Zhongshen:

• Assist enterprises to connect with local certification agents in Vietnam 15 working days in advance,and pre-review CB certification materials (including product drawings and load test reports);
• For foldable plastic storage containers (with load capacity less than 500kg),help enterprises apply for the "simplified safety filing" of the Ministry of Industry and Trade of Vietnam to avoid additional certification costs;
• The packing list shall be additionally marked with the "safety mark number recognized by Vietnam Customs" to ensure that the parameters are consistent with the certification report.

II.Customs Clearance Operation: Respond to the Increase of Vietnam Customs Inspection Rate

In 2026,to strengthen the supervision of special equipment,Vietnam Customs has raised the inspection rate of storage containers from 8% in 2025 to 15%,among which the "weld strength test" of steel storage containers is a key inspection item.If enterprises fail to prepare test reports in advance,the inspection time may be extended from 2 working days to 5 working days.

The customs brokerage firm Zhongshen cooperates with in Ho Chi Minh City,Vietnam has 3 on-site specialists holding Vietnam Customs inspection qualifications:

• Submit pre-declaration 3 days before the goods arrive at the port,and upload the electronic copies of CB certification and test report simultaneously;
• Specialists provide on-site translation during inspection and assist customs in checking weld marks and test reports;
• For goods under the RCEP framework,priority is given to "green channel" declaration,and the inspection rate can be reduced to 5%.

III.Tax Refund Processing: Optimize the Tax Refund Process for Haikou-Vietnam Trade

In 2026,the tax refund rate for storage containers exported from Haikou to Vietnam remains at 13%,but Vietnamese importers need to issue a "goods acceptance certificate" within 3 working days after the bill of lading is confirmed,otherwise the tax department of Haikou will not accept the tax refund application.Previously,some enterprises had their tax refund cycle extended from 15 days to 22 days due to the importer’s delay in providing the certificate.

Zhongshen has established a linkage mechanism between "tax refund specialists and Vietnam customs brokerage firms":

• After the goods arrive at the port,the customs brokerage firm reminds the importer to issue the acceptance certificate simultaneously,and the specialist sends the scanned copy of the certificate to Haikou Tax Bureau within 1 hour;
• Pre-review tax refund materials (customs declaration form,VAT invoice,certificate of origin) in advance to avoid rejection due to incorrect invoice title;
• Since 2026,the average tax refund cycle for storage container exports under Zhongshen’s agency is 12 working days,5 days faster than the industry average.

Efficiency Comparison of Haikou Storage Container Export Agency Services

Zhongshen’s Experience Summary: Core Advantages of Customized Services

Supervisor Mao of Zhongshen mentioned that in March 2026,we acted as an agent for a Haikou enterprise to export 200 steel storage containers to Vietnam.Thanks to the advance processing of CB certification and RCEP Certificate of Origin,the tariff was reduced from 8% to 4%,saving 12,000 yuan in costs and shortening the customs clearance time by 4 days compared with before.There is also an enterprise producing foldable plastic storage containers,whose products have a load capacity of less than 500kg.Zhongshen helped it apply for simplified filing with the Ministry of Industry and Trade of Vietnam,avoiding 3,000 yuan of CB certification fees.

These cases show that the core of storage container export to Vietnam is "precise policy matching".For storage containers of different materials (steel/plastic) and different load capacities,Vietnam’s certification requirements and tariff policies are different.Even for the same product,the customs clearance process varies when exported to different ports in Vietnam (Ho Chi Minh City/Hai Phong Port).Zhongshen’s customized service is to sort out policy requirements in advance according to the enterprise’s specific products and target ports,so as to avoid detours.

Conclusion: Choose Zhongshen’s Customized Agency Service

Whether it is steel storage containers or foldable plastic storage containers produced in Haikou,or exported to RCEP countries such as Vietnam and Thailand,Zhongshen can customize a full-process agency plan according to product characteristics and target country policies.From document preparation to tax refund receipt,each link has a dedicated person to connect,so as to avoid losses caused by policy differences.If you have storage container export needs,you can contact Ms.Wu of Zhongshen to consult the specific plan.