Full Process Guide for Hefei Imported Glass Sealant Agency

Hefei Imported Glass Sealant Agency: Full Chemical Customs Clearance Process and Pitfall Avoidance GuideAs a common auxiliary material in decoration and building material industries,glass sealant has seen a significant growth in import demand in Hefei in recent years.However,chemical product import involves multi-link supervision,and there are strict compliance requirements for customs declaration,commodity inspection and other links especially for dangerous goods glass sealant (such as acidic/alkaline solvent-based products).The following breaks down core operations and risk avoidance points for Hefei imported glass sealant agency from a practical perspective.### I.Compliance Precondition for Glass Sealant Import: Clarify Product Attributes and Supervision Red Lines1.Product Classification and HS Code Confirmation:

Glass sealant is mainly classified under Chapter 35 (protein substances,modified starches,etc.) or Chapter 32 (pigments/coatings),and the components shall be checked accurately:

• Silicone sealant (neutral/acidic): The HS codes are mostly 35069100 (silicone sealants) or 35069990 (other sealants),and it is required to judge whether it belongs to dangerous goods according to the solvent type (such as ethyl acetate,xylene).
• Solvent-based glass sealant (containing flammable components): If the flash point is lower than 61℃,it shall be classified as Class 3 flammable liquid according to the Catalogue of Hazardous Chemicals,and additional dangerous goods packaging labels shall be provided.2026 New Regulation Reminder: With the update of EU REACH Regulation,supplementary testing for the SVHC (Substances of Very High Concern) list is required for some imported glass sealants.### II.Hefei Port vs.Shanghai Port: Core Advantages of Off-site AgencyAs an inland city,Hefei’s local customs brokers generally lack sufficient professional expertise in chemical products.Leveraging 20 years of port experience of its Shanghai headquarters,Zhongshitong provides "off-site declaration + Shanghai Port linkage" services,with key advantages reflected in:

Typical Case: A building materials enterprise in Hefei led by Mr.Lin made their first import,the local agency misjudged the HS code (declared as 35069100 while the actual correct code was 35069990),resulting in a supplementary tax of 52,000 RMB required by Shanghai Customs after the cargo arrived at the port,and customs clearance was delayed for 10 days.### III.Full Process Breakdown of Hefei Imported Glass Sealant Agency**Step 1: Dual Pre-review of MSDS and Dangerous Labels (Key Error Prevention Point)**

A complete MSDS (containing 16 sections: chemical and enterprise information,hazard summary,composition/constituent information,first-aid measures,etc.) shall be submitted,with key verification on:

• Whether the packaging labels comply with GB 190-2009 (for example,Class 3 flammable liquids shall be affixed with "Flammable Liquid" labels);
• Whether the storage conditions meet domestic regulations (for example,acidic glass sealant shall be stored separately and isolated from oxidants).Practical Tip: Translate the MSDS into Chinese in advance,and mark key items such as "Hazard Statements" and "Precautionary Statements" to avoid secondary rectification requirements from the commodity inspection authority.**Step 2: Accurate Declaration of Customs Declaration Form Elements**

The following core elements shall be matched:

• Declared product name: Specified as "Silicone Sealant (Neutral/Acidic)";
• Dangerous goods grade: If it is a dangerous good,the UN number shall be indicated (such as UN1263: Ethyl Acetate);
• Certificate of Origin: If imported from RCEP member countries (such as Japan,South Korea),apply for FORM R in advance to enjoy tariff reduction.**Step 3: Commodity Inspection and Release**
• Non-dangerous goods: Pick up the goods with customs declaration form + release note;
• Dangerous goods: On-site unpacking verification by commodity inspection authority (focus on checking consistency of dangerous labels and MSDS),and the Inspection and Quarantine Certificate of Imported Goods will be issued after passing verification.Pitfall Avoidance Reminder: Starting from 2026,Shanghai Port implements "Double Random + Full Process Traceable" inspection for dangerous goods glass sealant,and the electronic inspection application shall be submitted 3 working days in advance.### IV.Practical Case: Delay Response of Hefei Enterprise Importing South Korean Acidic Glass Sealant**Situation (S)**: Hefei Company A imported 500 boxes of acidic glass sealant containing ethyl acetate solvent from South Korea,without confirming the dangerous labels in advance.

**Task (T)**: Complete customs clearance within 3 days,otherwise port demurrage fee (50 RMB per box per day) will be incurred.

**Action (A)**:

• Zhongshitong Shanghai team urgently contacted the South Korean agency to replace the dangerous labels (the original label only marked "Acidic" without affixing the UN number);
• Applied to Shanghai Customs for "Advance Declaration + Priority Inspection" simultaneously,and submitted supplementary explanations;
• Coordinated the Hefei warehouse to prepare the "dangerous goods dedicated zone" in advance (anti-static floor,ventilation equipment).

**Result (R)**: The inspection was completed within 24 hours after the cargo arrived at the port,about 75,000 RMB of demurrage fee was saved,and the goods were picked up 1 day ahead of schedule.### V.Risk Warning and Zhongshitong Service Guarantee1.Compliance Risk:

• Non-compliant dangerous labels: May face return shipment (the return rate of dangerous goods at Shanghai Port in 2026 increased by 12% year on year);
• Missing MSDS: Need to resubmit complete documents,which delays customs clearance.
  • **Cost Risk**:
• Demurrage fee trap: Some freight forwarders conceal port storage fees (for example,the storage fee at Yangshan Port is 150 RMB per day per 20ft container);
• Exchange rate fluctuation: It is recommended to adopt "RMB settlement + advance exchange rate locking" to avoid exchange loss.
  • Zhongshitong Risk Control Measures:
• Special pre-review checklist for chemical products: Containing 12 mandatory documents (HS code confirmation form,dangerous label verification form,MSDS translation,etc.);
• Exchange rate hedging scheme: Cooperate with banks to provide dual options of "exchange rate locking + spot exchange settlement".### VI.Service Features of Zhongshitong Hefei Glass Sealant Import AgencyAs an agency with its Shanghai headquarters located in the core port area,we provide the following services for Hefei imported glass sealant:
  • 7×24 hour chemical product consultation (WeChat/Phone: 139-1777-6136);
  • Off-site declaration at national ports: Seamless connection between Hefei,Shanghai,Ningbo,Shenzhen and other ports;
  • 20-year experienced team: Familiar with special requirements for chemical customs clearance in the Yangtze River Delta region (such as the "Priority Inspection" channel for dangerous goods of Hefei Customs).Glass sealant import seems simple,but actually requires multi-link professional control.Choosing Zhongshitong is not only choosing agency service,but also choosing a compliance firewall for chemical product import.