Guangzhou Chemical Products Export Customs Declaration Agent Procedures and Precautions

1.Market Background and Core Challenges of Exporting Chemical Products from Guangzhou to Vietnam

In 2026,the export of Guangzhou chemical products to the Southeast Asian market continues to grow.Taking Vietnam as an example,the annual demand for basic chemical raw materials and fine chemicals from local manufacturing industry increases by more than 12%.Among them,the export order volume of products such as lithium battery electrolyte and coating intermediates increased by 18% compared with 2025.However,Vietnam Customs has tightened access requirements for chemical products year by year.The updated "Vietnam Catalogue of Import and Export Commodity Classification" in 2026 has refined more than 1200 chemical product codes.In addition,the identification report of hazardous chemicals must be issued by a Vietnamese officially accredited institution.Many Guangzhou enterprises suffer from customs clearance delays due to inconsistent documents and incorrect coding,and the average delay time has increased from 3 days in 2025 to 7 days.

2.Core Service Value of Zhongshen for Exporting Chemical Products from Guangzhou to Vietnam

Zhongshen has been deeply engaged in chemical product export agency for more than 20 years.In view of the differences in trade policies between Guangzhou and Vietnam,it has established a service system of "policy sorting in advance + local team linkage".The team of Manager Lei from the Document Department can track the policy updates of Vietnam Customs 3 months in advance,and cooperate with the local customs clearance team at Haiphong Port,Vietnam in the customs clearance link to achieve full-process connection from pre-audit to release,helping enterprises avoid more than 90% of compliance risks.

3.Service Module Decomposition: Focus on Three Core Areas: Documents,Customs Clearance and Tax Rebate

(1) Document Module: Accurately Match Vietnamese Coding and Identification Requirements

According to the new regulations of Vietnam Customs in 2026,the HS code of chemical products must match "composition content + application scenario".For example,for the same acrylic coating,the code difference between construction use and industrial use is up to 3 digits,and enterprises with an error rate exceeding 15% will be required to re-declare.At the same time,hazardous chemicals need to provide the "Hazardous Goods Transportation Identification Report" approved by the Ministry of Transport of Vietnam,and the self-inspection cycle is as long as 10 days.

• Pre-classification of codes: Manager Lei’s team completes code verification within 3 working days and adjusts according to the latest Vietnamese catalogue.In the first half of 2026,the code error rate of Guangzhou customers dropped to 0.8%;
• Identification report coordination: Cooperate with 3 officially accredited institutions in Vietnam,complete the report within 5 days after the customer provides the sample,which is 5 days shorter than self-inspection;
• Electronic document synchronization: Upload documents in advance through Guangzhou Customs Single Window and Vietnam Customs RCEP channel,the pre-audit pass rate reaches 98%.

(2) Customs Clearance Module: Avoid Port Inspection and Tariff Barriers

In 2026,Vietnam implements "random inspection + sampling inspection of key products" for imported chemical products.The inspection rate of lithium battery electrolyte and adhesives increased by 8% compared with 2025.Some enterprises cannot enjoy RCEP tariff concessions due to format errors of certificate of origin,which increases the cost by 3-5% additionally.

(3) Tax Rebate Module: Shorten the declaration cycle to 7 working days

Export tax rebate for Guangzhou chemical products requires 7 types of materials.After the State Taxation Administration of China simplified the process in 2026,the average industry cycle still reaches 15 days,and some enterprises are delayed due to inconsistent data between customs declaration forms and invoices.

• Synchronous collection of documents: The team of Ms.Lu from the Tax Rebate Department sorts out all materials within 1 working day after customs clearance is completed;
• Cross-check of data: Coordinate with the customer’s finance department in advance to ensure that the product name and quantity on the customs declaration form are consistent with the invoice;
• Special tax commissioner connection: A dedicated person follows up the review of Guangzhou Tax Bureau,and feedbacks problems within 1 hour.

In the first half of 2026,the average tax rebate cycle for Guangzhou chemical enterprises served by Zhongshen is only 7 days,which is 8 days shorter than the industry average.

4.Practical Case of Agency Service Improving Customs Clearance Efficiency

In March 2026,a coating enterprise in Guangzhou exported 12 tons of acrylic coating to Ho Chi Minh Port,Vietnam.It was rejected due to coding error when operating by itself,with an expected cycle of 25 days.After being agented by Zhongshen:

• Document pre-audit passed in 3 days,code adjusted to the latest Vietnamese classification;
• Cooperated with local team in customs clearance link,inspection time shortened to 2 days;
• Tax rebate materials submitted simultaneously,funds arrived in 7 days.

The total cycle is only 12 days,saving more than 2000 RMB in storage costs and avoiding order breach losses.

5.Customized Services Adapt to the Export Demand of Guangzhou Chemical Products

Besides Vietnam,for Guangzhou chemical products exported to Thailand,Malaysia and other countries,Zhongshen can customize solutions according to the policies of each country: Thailand requires MSDS for cosmetic raw materials (Vietnam only requires composition statement),Malaysia requires registration certificate for pesticide intermediates (Vietnam has no mandatory requirement).Whether it is basic chemical raw materials or fine chemicals,Zhongshen can match the corresponding service modules to help enterprises avoid risks.

If you have demand for exporting chemical products from Guangzhou,you can contact the relevant person in charge of Zhongshen to customize your exclusive agency plan.