Chapter 03 covers fish, crustaceans, molluscs and other aquatic invertebrates, including live, fresh, chilled, frozen, dried, salted, smoked and other processed products, but excludes cooked or further processed aquatic products (classified under Chapter 16). This chapter is the core chapter for international trade in aquatic products, involving the entire chain of aquaculture, fishing and processing. Heading 0303 specifically covers frozen fish, but excludes fish fillets and other fish meat (classified under 0304). It includes whole, headless, gutted, cut into pieces and other frozen-preserved fish, covering both marine and freshwater fish. Freezing methods include conventional freezing, quick freezing, etc., but the frozen state must be maintained during transport. The first 2 digits 03 indicate Chapter 3: Fish and crustaceans, etc. Digits 3-4, 03, indicate heading 0303: Frozen fish, excluding fish fillets of 0304. Digits 5-6, 11, indicate subheading 030311: Frozen sockeye salmon. Sockeye salmon (Oncorhynchus nerka) is a species of Pacific salmon, commonly known as red salmon. This subheading further distinguishes the species, alongside 030312 (other Pacific salmon), 030313 (Atlantic salmon), etc. The product is frozen sockeye salmon, not smoked, salted or cooked, and not fish fillets or fish meat, so it is classified under 0303 rather than 0304 or 0305. At the same time, sockeye salmon belongs to Pacific salmon, so it is classified under 030311 rather than 030312 (other Pacific salmon) or 030313 (Atlantic salmon).

Product Name: Fill in the specific product name, which should include the scientific name or common name of the species, such as 'frozen sockeye salmon' or 'frozen red salmon'. Latin Scientific Name: Fill in the Latin scientific name of the species. Sockeye salmon is Oncorhynchus nerka; ensure accuracy. Method of Production or Preservation: State 'frozen' and indicate whether it is headless, gutted, cut into pieces, etc., such as 'frozen whole, gutted'. State: Describe the physical state, such as whole, headless, gutted, cut into pieces, etc., which affects classification. Specifications: Fill in the individual weight or size range, such as '2-3 kg each', to facilitate customs statistics. Origin: Fill in the country/region of capture or aquaculture, such as 'Russia', 'United States', etc. Brand: If there is a brand, fill in the brand name; if there is no brand, write 'none'. Packaging Specifications: Fill in the packaging method, such as 'carton-packed, 10 kg per carton'. Product Name: Frozen sockeye salmon; Latin Scientific Name: Oncorhynchus nerka; Method of Production or Preservation: Frozen, whole, gutted; State: Whole; Specifications: 2-3 kg each; Origin: Russia; Brand: None; Packaging Specifications: Carton-packed, 10 kg per carton. Mistakenly classifying frozen sockeye salmon under 0304 (fish fillets); if not sliced, it should be classified under 0303. Ignoring the Latin scientific name, resulting in confusion with other salmon; Oncorhynchus nerka should be filled in accurately. Filling in 'chilled' for the preservation method when it is actually frozen, which affects classification.

The core basis for classification is: 1) the product is frozen fish, not fish fillets or fish meat, so it is classified under 0303; 2) the species is sockeye salmon (Oncorhynchus nerka), which belongs to Pacific salmon, so it is classified under 030311; 3) it has not been smoked, salted or cooked, otherwise it would be classified under 0305 or Chapter 16. At the same time, the frozen state must be confirmed; if fresh or chilled, it is classified under 0302. 030312 Other frozen Pacific salmon: 030312 covers Pacific salmon other than sockeye salmon, such as chum salmon, coho salmon, etc.; the species are different. 030313 Frozen Atlantic salmon: 030313 is Atlantic salmon (Salmo salar), which is a different species from Pacific salmon, with differences in distribution and morphology. 0304 Frozen fish fillets and other fish meat: 0304 is fish fillets or fish meat, which are classified here even if frozen, while 030311 is whole or gutted frozen fish. 0305 Smoked fish and salted fish: 0305 includes smoked, salted, dried and other processed fish; frozen sockeye salmon has not undergone these treatments. Confirm that the product is in a frozen state, not fresh or chilled. Confirm that the species is sockeye salmon (Oncorhynchus nerka). Confirm that it is not sliced and is whole or gutted, etc. Confirm that it has not been smoked, salted or cooked. Check that the Latin scientific name is consistent with the actual product.

How can I query the tariff rate for HS code 030311? You can check the most-favored-nation rate, general rate, value-added tax rate, etc. by entering HS code 030311 on the official website of the General Administration of Customs of China, the International Trade Single Window, or third-party query platforms. Note that tariff rates may be adjusted with policy changes; it is recommended to rely on the latest official release. What is the difference in HS codes between frozen sockeye salmon and frozen Atlantic salmon? Frozen sockeye salmon is classified under 030311, while frozen Atlantic salmon is classified under 030313. The two species are different: sockeye salmon is Pacific salmon (Oncorhynchus nerka), and Atlantic salmon is Salmo salar. The Latin scientific name must be provided during declaration to distinguish them. If frozen sockeye salmon is headless and gutted, is it still classified under 030311? Yes, headless and gutted frozen sockeye salmon is still classified under 030311, as long as it is not cut into fish fillets or fish meat. However, if cut into fish fillets, it should be classified under 0304. What are the consequences of filling in the Latin scientific name incorrectly during declaration? It may lead to incorrect classification, affecting tariffs and regulatory conditions, and may even be deemed false declaration by customs, resulting in fines or cargo detention. Be sure to fill in Oncorhynchus nerka accurately. Does 030311 apply to smoked sockeye salmon? No. Smoked sockeye salmon should be classified under 0305 (smoked fish); if further cooked, it is classified under Chapter 16. 030311 applies only to frozen, unsmoked sockeye salmon. For cross-border e-commerce sales of frozen sockeye salmon, how should the HS code be selected? If it is whole frozen sockeye salmon, choose 030311; if it is fish fillets, choose 0304; if it is cooked, choose Chapter 16. It must be determined according to the actual product state and processing method. What regulatory documents are required for importing frozen sockeye salmon? Usually, an inspection and quarantine certificate for inbound goods, certificate of origin, health certificate, etc. are required, depending on the exporting country and China's requirements. It is recommended to consult the local customs or a professional customs broker. What is the key distinction between 030311 and 030312? The key is the species: 030311 specifically refers to sockeye salmon (Oncorhynchus nerka), while 030312 refers to other Pacific salmon, such as chum salmon, coho salmon, etc. An accurate Latin scientific name must be provided during declaration.