Chapter 85 covers electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles. This chapter is the most concentrated chapter of electromechanical products in the HS classification, involving various types of equipment for the generation, conversion, storage, transmission and application of electrical energy, ranging from household appliances to industrial motors, from semiconductor devices to communication equipment. The headings within the chapter are arranged by function or use, with 8505 being electromagnetic devices. Heading 8505 covers electromagnets; permanent magnets and articles intended to become permanent magnets after magnetization; electromagnetic or permanent magnet chucks, clamps and similar holding devices; electromagnetic couplings, clutches and brakes; electromagnetic lifting heads. The core of this heading is devices that use electromagnetic principles or permanent magnets to achieve holding, clamping, transmission or braking functions, excluding ordinary mechanical clamps. Code 850590 is a six-digit subheading: the first 2 digits 85 represent Chapter 85 (electrical machinery and equipment and parts thereof); digits 3-4, 05, represent heading 8505 (electromagnets, permanent magnets and electromagnetic/permanent magnet holding devices, etc.); digits 5-6, 90, represent subheading 8505.90, i.e., the "other" subheading under heading 8505, covering electromagnetic or permanent magnet clamps, chucks, similar holding devices, electromagnetic couplings, clutches, brakes and lifting heads not elsewhere specified. This subheading is the residual subheading of heading 8505, and any electromagnetic holding device that does not fall under 8505.11 (permanent magnets and articles) or 8505.19 (other electromagnets) is classified here. Electromagnetic clamps use electromagnetic force or permanent magnetic force to hold workpieces, belonging to electromagnetic devices rather than purely mechanical clamps. Their functional core is an electromagnet or permanent magnet, so they are classified under 8505, not 8205 (hand tools) or 8466 (machine tool accessories). Within 8505, since they are not permanent magnets themselves (8505.11) or ordinary electromagnets (8505.19), they are classified under subheading 8505.90 "other".

Product Name: The standard name of the declared commodity, which should accurately reflect the product attributes, such as "electromagnetic clamp", "electromagnetic chuck", etc., avoiding the use of colloquial names or model numbers as substitutes. Use: Explain the specific application scenario of the clamp, such as for machine tool processing, welding, assembly, lifting, etc., clarifying its industrial use. Working Principle: Briefly describe the clamping principle, such as "electromagnet energized to generate magnetic force for adsorption", "permanent magnet magnetic force clamping" or "electrically controlled permanent magnet", to distinguish electromagnetic from mechanical. Material: Material of main components, such as iron core, coil, permanent magnet (neodymium iron boron, ferrite, etc.) and housing material, affecting classification and regulatory conditions. Brand: Manufacturer or brand name, such as "XX brand", used for intellectual property customs protection record verification. Model: Product model or specification, such as "ECM-300", facilitating customs identification of specific product parameters. Rated Voltage/Current: Working voltage or current parameters of the electromagnetic clamp, such as "DC24V", corroborating its electromagnetic working principle. Permanent Magnet or Not: Clearly state whether it is electromagnetic type (requires power) or permanent magnet type (no power required), or a combination of both, to distinguish 8505.11 from 8505.90. Customs declaration example: Product Name: Electromagnetic Clamp Use: For clamping metal workpieces during CNC machining Working Principle: Electromagnet energized to generate magnetic force, adsorbing workpieces Material: Iron core, copper coil, cast aluminum housing Brand: SMW Model: EC-200 Rated Voltage: DC24V Permanent Magnet or Not: No Specification: 200mm×150mm×80mm Declaration Elements: 1. Product Name: Electromagnetic Clamp; 2. Use: Machine tool clamping; 3. Working Principle: Electromagnetic adsorption; 4. Material: Iron core, copper coil; 5. Brand: SMW; 6. Model: EC-200; 7. Rated Voltage: DC24V; 8. Permanent Magnet or Not: No. Mistakenly classifying permanent magnet clamps under 8505.90; permanent magnets themselves should be classified under 8505.11, but if a permanent magnet clamp directly holds via permanent magnet, judgment should be based on function. Ignoring the working principle description, only writing "clamp", easily classified as mechanical clamp (such as 8466). Failing to distinguish electromagnetic clamps from electromagnetic lifting heads; the latter also belongs to 8505.90 but has a different use, which needs to be clarified in the use column. False declaration of brand and model may affect intellectual property customs protection and subsequent audits.

Core classification criteria: 1. Whether the commodity function is electromagnetic or permanent magnet clamping; 2. Whether the electromagnet or permanent magnet is the core component; 3. Whether it is used in industrial clamping scenarios such as machine tools, welding, assembly. If the commodity is a purely mechanical clamp, even with magnetic assistance, if the main clamping force comes from the mechanical structure, it should be classified under mechanical headings (such as 8466). If it is an electromagnet itself, classify under 8505.19; if it is a permanent magnet itself, classify under 8505.11. Electromagnetic clamps as complete devices are classified under 8505.90. 850511 Permanent magnets and articles: 850511 is permanent magnets themselves (such as neodymium iron boron magnets), while 850590 is clamping devices using permanent magnets or electromagnets; the latter is a functional component, the former is a material. 850519 Other electromagnets: 850519 is electromagnets (such as electromagnets for solenoid valves), while 850590 is electromagnetic clamps, which are specific application devices of electromagnets with clamping functions. 846620 Workpiece holders (machine tool accessories): 846620 is workpiece holders for machine tools, usually mechanical; if the clamp is electromagnetically driven, it should be preferentially classified under 850590, as its functional core is electromagnetic. 820570 Vises, clamps and similar hand tools: 820570 is hand tools, relying on manual mechanical clamping; electromagnetic clamps rely on electromagnetic force and are usually fixed installations, not hand tools. 850520 Electromagnetic couplings, clutches and brakes: 850520 is transmission or braking devices, while 850590 is holding devices; they have different functions but both belong to heading 8505. Is the main clamping force electromagnetic or permanent magnetic? Is it a complete clamping device rather than a magnet itself? Is it used for industrial clamping rather than as a hand tool? Is it under heading 8505 and not 8505.11/19? Do the declaration elements completely describe the working principle?

What is the difference in HS codes between electromagnetic clamps and permanent magnet clamps? Electromagnetic clamps require power to generate magnetic force, while permanent magnet clamps rely on permanent magnet force. If both are complete clamping devices, they are usually classified under 8505.90; but if a permanent magnet clamp is merely a permanent magnet used directly, it may be classified under 8505.11. The key is whether it constitutes a "clamp" device. Can electromagnetic clamps be classified under 8466? 8466 is machine tool accessories, including mechanical clamps. If an electromagnetic clamp is specifically used for machine tools and clamps by electromagnetic force, according to the General Rules of Interpretation, the functional core is electromagnetic, and it should be preferentially classified under 8505.90. However, if electromagnetism is only auxiliary and the main clamping force is mechanical, it may be classified under 8466. How should the "Working Principle" column be filled in during declaration? It should concisely describe the method of electromagnetic force generation, such as "electromagnet energized to generate magnetic force to adsorb workpieces" or "permanent magnet magnetic force clamping". Avoid writing only "electromagnetic"; it should reflect the clamping function. Are electromagnetic lifting heads and electromagnetic clamps classified under the same code? Yes, both are classified under 8505.90. However, their uses differ during declaration: lifting heads are used for hoisting, clamps are used for fixing during processing. They need to be clearly distinguished in the use column for customs statistics. What regulatory documents are required for importing electromagnetic clamps? Generally, no special regulatory documents are required, but if they involve radio transmission or contain hazardous substances, relevant certificates may be needed. For specifics, consult the regulatory conditions published by the General Administration of Customs, or consult a customs broker. How to inquire about the import tax rate for electromagnetic clamps? You can inquire through the official website of the General Administration of Customs or the China International Trade Single Window. Enter HS code 850590 to view the MFN rate, general rate and VAT rate. Note that tax rates are subject to adjustment; the latest published rates shall prevail. What should be filled in the "Material" declaration element for electromagnetic clamps? The materials of main components should be filled in, such as iron core, coil, permanent magnet (neodymium iron boron), housing (cast aluminum), etc. Materials affect classification and regulation; for example, containing specific metals may involve export controls. For cross-border e-commerce retail export of electromagnetic clamps, is the HS code also 850590? Yes, the HS code does not change with the trade mode. However, cross-border e-commerce exports need to pay attention to declared value and personal item limits, and simplified declaration may apply. It is recommended to classify according to the actual commodity to ensure compliance.