Chapter 84 is the broad category in the HS classification system covering 'nuclear reactors, boilers, machinery and mechanical appliances and parts thereof.' This chapter has an extremely wide scope, including everything from steam boilers and internal combustion engines to computers and printers. The core characteristic is that goods must have mechanical movement, energy conversion, or data processing functions, and are usually power-driven or electronically operated. This chapter does not include purely electrical equipment (Chapter 85), optical instruments (Chapter 90), or vehicles (Chapter 87). Heading 8471 covers 'Automatic data processing machines and units thereof; magnetic or optical readers, machines for transcribing data onto data media in coded form and machines for processing such data, not elsewhere specified or included.' This heading mainly targets digital computers, analog computers, hybrid computers and their peripheral equipment, such as CPUs, keyboards, monitors, storage devices, etc. The first 2 digits, 84: indicates Chapter 84, belonging to the machinery and mechanical appliances category. The 3rd-4th digits, 71: indicates heading 8471, i.e., automatic data processing machines and units thereof. The 5th-6th digits, 10: indicates subheading 8471.10, specifically 'analog or hybrid automatic data processing machines.' Analog computers use continuous physical quantities (such as voltage, current) to represent values and perform calculations, distinguishing them from digital computers (8471.50, etc.). This subheading covers complete analog computers, regardless of whether they include digital interfaces. Analog computers are classified under 8471.10 because they use continuous physical quantities to process data, rather than under digital computer subheadings (such as 8471.50). They also do not belong to 8471.30 (portable digital computers) or 8471.41 (machines comprising in the same housing at least a processing unit and an input and output unit). If an analog computer serves only as a control component of a device, it may be classified as a part, but complete machines are still classified under 8471.10.
Chapter
Chapter 84 is the broad category in the HS classification system covering 'nuclear reactors, boilers, machinery and mechanical appliances and parts thereof.' This chapter has an extremely wide scope, including everything from steam boilers and internal combustion engines to computers and printers. The core characteristic is that goods must have mechanical movement, energy conversion, or data processing functions, and are usually power-driven or electronically operated. This chapter does not include purely electrical equipment (Chapter 85), optical instruments (Chapter 90), or vehicles (Chapter 87).
Heading
Heading 8471 covers 'Automatic data processing machines and units thereof; magnetic or optical readers, machines for transcribing data onto data media in coded form and machines for processing such data, not elsewhere specified or included.' This heading mainly targets digital computers, analog computers, hybrid computers and their peripheral equipment, such as CPUs, keyboards, monitors, storage devices, etc.
Digit Breakdown
The first 2 digits, 84: indicates Chapter 84, belonging to the machinery and mechanical appliances category. The 3rd-4th digits, 71: indicates heading 8471, i.e., automatic data processing machines and units thereof. The 5th-6th digits, 10: indicates subheading 8471.10, specifically 'analog or hybrid automatic data processing machines.' Analog computers use continuous physical quantities (such as voltage, current) to represent values and perform calculations, distinguishing them from digital computers (8471.50, etc.). This subheading covers complete analog computers, regardless of whether they include digital interfaces.
Classification Basis
Analog computers are classified under 8471.10 because they use continuous physical quantities to process data, rather than under digital computer subheadings (such as 8471.50). They also do not belong to 8471.30 (portable digital computers) or 8471.41 (machines comprising in the same housing at least a processing unit and an input and output unit). If an analog computer serves only as a control component of a device, it may be classified as a part, but complete machines are still classified under 8471.10.
📝 Declaration Elements
Product Name: Declare the Chinese and foreign language names of the goods, which should accurately reflect the product attributes, such as 'analog computer' or 'analog computing device.' Brand: Fill in the manufacturer or brand name; if there is no brand, fill in 'no brand.' Model: Fill in the model or specification of the goods to distinguish different products of the same brand. Use: Explain the specific application scenarios of the analog computer, such as 'used for analog simulation, process control.' Working Principle: Briefly describe the principle of performing calculations based on continuous physical quantities (such as voltage, current). Complete Machine or Not: Declare whether it is a complete machine or a part; complete machines are classified under 8471.10, while parts may be classified under 8473. Main Function: Describe the core function, such as 'differential equation solving,' 'real-time simulation.' Example of customs declaration elements:
Product Name: Analog Computer
Brand: ABC
Model: AN-100
Use: Used for aircraft simulation
Working Principle: Continuous physical quantity computation based on operational amplifiers
Complete Machine or Not: Complete machine
Main Function: Real-time solving of differential equations
HS Code: 8471100000 Mistakenly classifying analog computers under digital computer subheadings (such as 8471.50), resulting in incorrect tax rates and regulatory conditions. Failure to distinguish between complete machines and parts; parts should be classified under 8473, not 8471.10. Incorrect description of working principle, such as filling in 'digital circuits,' which may trigger customs scrutiny.
Product Name
Declare the Chinese and foreign language names of the goods, which should accurately reflect the product attributes, such as 'analog computer' or 'analog computing device.'
⚠️ Misreporting as 'digital computer' or 'hybrid computer,' leading to classification errors.
Brand
Fill in the manufacturer or brand name; if there is no brand, fill in 'no brand.'
⚠️ Confusing brand with model, or omitting the brand, making identification impossible.
Model
Fill in the model or specification of the goods to distinguish different products of the same brand.
⚠️ Incomplete model entry or inconsistency with the actual product.
Use
Explain the specific application scenarios of the analog computer, such as 'used for analog simulation, process control.'
⚠️ Use description is too general, such as 'used in industry,' which cannot assist classification.
Working Principle
Briefly describe the principle of performing calculations based on continuous physical quantities (such as voltage, current).
⚠️ Incorrectly filling in as 'digital signal processing' or 'binary operations.'
Complete Machine or Not
Declare whether it is a complete machine or a part; complete machines are classified under 8471.10, while parts may be classified under 8473.
⚠️ Declaring parts as complete machines, or vice versa.
Main Function
Describe the core function, such as 'differential equation solving,' 'real-time simulation.'
⚠️ Function description confused with digital computers, such as 'data processing.'
Example： Example of customs declaration elements:
Product Name: Analog Computer
Brand: ABC
Model: AN-100
Use: Used for aircraft simulation
Working Principle: Continuous physical quantity computation based on operational amplifiers
Complete Machine or Not: Complete machine
Main Function: Real-time solving of differential equations
HS Code: 8471100000
Common Mistakes：
Mistakenly classifying analog computers under digital computer subheadings (such as 8471.50), resulting in incorrect tax rates and regulatory conditions.
Failure to distinguish between complete machines and parts; parts should be classified under 8473, not 8471.10.
Incorrect description of working principle, such as filling in 'digital circuits,' which may trigger customs scrutiny.
🎯 Classification Logic
The core basis for classification is whether the goods perform calculations using continuous physical quantities. According to HS notes, 8471.10 specifically refers to analog computers, i.e., equipment that uses continuously varying physical quantities (such as voltage, current) to represent values and perform calculations. If a device has both analog and digital computing functions, it is classified as a hybrid computer, which may still be classified under 8471.10 or 8471.50, requiring specific analysis. 847150 Digital Computers: Digital computers use discrete binary data for calculations, while analog computers use continuous physical quantities. The two have fundamentally different working principles and are classified under different subheadings. 847130 Portable Digital Computers: Portable digital computers are lightweight, with display screens and keyboards, while analog computers are usually fixed installations without digital processing units. 847141 Machines comprising in the same housing at least a processing unit and an input and output unit: This subheading is for digital computers; even if analog computers have input and output units, they are classified under 8471.10 due to different principles. 847149 Other Automatic Data Processing Machines: This subheading is a residual subheading for digital computers and does not apply to analog computers. 847180 Other Automatic Data Processing Equipment: This subheading covers units or auxiliary equipment of digital computers; complete analog computers are not classified here. Does it perform calculations using continuous physical quantities? Does it have digital processing functions? Is it a complete machine or a part? Is it used for automatic data processing? Is it used in combination with other equipment?
Basis
The core basis for classification is whether the goods perform calculations using continuous physical quantities. According to HS notes, 8471.10 specifically refers to analog computers, i.e., equipment that uses continuously varying physical quantities (such as voltage, current) to represent values and perform calculations. If a device has both analog and digital computing functions, it is classified as a hybrid computer, which may still be classified under 8471.10 or 8471.50, requiring specific analysis.
Confused Codes：
847150 - Digital Computers
Digital computers use discrete binary data for calculations, while analog computers use continuous physical quantities. The two have fundamentally different working principles and are classified under different subheadings.
847130 - Portable Digital Computers
Portable digital computers are lightweight, with display screens and keyboards, while analog computers are usually fixed installations without digital processing units.
847141 - Machines comprising in the same housing at least a processing unit and an input and output unit
This subheading is for digital computers; even if analog computers have input and output units, they are classified under 8471.10 due to different principles.
847149 - Other Automatic Data Processing Machines
This subheading is a residual subheading for digital computers and does not apply to analog computers.
847180 - Other Automatic Data Processing Equipment
This subheading covers units or auxiliary equipment of digital computers; complete analog computers are not classified here.
Self-Check：
✓ Does it perform calculations using continuous physical quantities?
✓ Does it have digital processing functions?
✓ Is it a complete machine or a part?
✓ Is it used for automatic data processing?
✓ Is it used in combination with other equipment?
❓ FAQ
How are analog computers and digital computers distinguished in HS codes? Analog computers are classified under 8471.10, while digital computers are classified under 8471.30, 8471.41, 8471.49, or 8471.50 depending on the type. The core difference lies in the computing method: analog computers use continuous physical quantities, while digital computers use discrete binary data. The working principle must be clearly stated during declaration. If an analog computer has a digital interface, does it affect classification? No. As long as the core computation is still based on continuous physical quantities, even with a digital interface for data transmission, it is still classified under 8471.10. However, if digital processing becomes the main function, it may be classified under a digital computer subheading. How are parts of analog computers classified? If parts are dedicated for use with analog computers, they should be classified under 8473.30 (parts of automatic data processing machines). However, if the parts themselves have independent functions, they are classified under the corresponding heading. During declaration, 'dedicated for use with analog computers' must be stated. How to check the regulatory conditions and tax rates for 847110? The latest tax rates and regulatory conditions can be checked through the official website of the General Administration of Customs of China or the 'Single Window.' Tax rates may change; it is recommended to rely on the customs system feedback at the time of declaration. Regulatory conditions may involve import licenses for mechanical and electrical products, etc. How should 'Working Principle' be filled in the declaration elements for analog computers? It should briefly describe the principle of performing calculations based on continuous physical quantities (such as voltage, current), for example, 'using operational amplifiers to solve differential equations.' Avoid incorrect descriptions such as 'digital signal processing.' Which code should hybrid computers be classified under? Hybrid computers have both analog and digital computing functions and are usually classified according to the main function. If analog computation is primary, they may be classified under 8471.10; if digital computation is primary, under 8471.50. Technical documentation must be provided for customs determination. Are there special requirements for importing used analog computers? Used analog computers may involve import regulation of used mechanical and electrical products, requiring pre-shipment inspection and other procedures. During declaration, 'used' must be stated and relevant certificates provided; the HS code remains 8471.10. Is the classification of analog computers affected by size or weight? No. HS code 8471.10 is mainly based on the working principle, not size or weight. Whether a large analog computer or a small module, as long as the core is analog computation, it is classified under this subheading.
Q: How are analog computers and digital computers distinguished in HS codes?
A: Analog computers are classified under 8471.10, while digital computers are classified under 8471.30, 8471.41, 8471.49, or 8471.50 depending on the type. The core difference lies in the computing method: analog computers use continuous physical quantities, while digital computers use discrete binary data. The working principle must be clearly stated during declaration.
Q: If an analog computer has a digital interface, does it affect classification?
A: No. As long as the core computation is still based on continuous physical quantities, even with a digital interface for data transmission, it is still classified under 8471.10. However, if digital processing becomes the main function, it may be classified under a digital computer subheading.
Q: How are parts of analog computers classified?
A: If parts are dedicated for use with analog computers, they should be classified under 8473.30 (parts of automatic data processing machines). However, if the parts themselves have independent functions, they are classified under the corresponding heading. During declaration, 'dedicated for use with analog computers' must be stated.
Q: How to check the regulatory conditions and tax rates for 847110?
A: The latest tax rates and regulatory conditions can be checked through the official website of the General Administration of Customs of China or the 'Single Window.' Tax rates may change; it is recommended to rely on the customs system feedback at the time of declaration. Regulatory conditions may involve import licenses for mechanical and electrical products, etc.
Q: How should 'Working Principle' be filled in the declaration elements for analog computers?
A: It should briefly describe the principle of performing calculations based on continuous physical quantities (such as voltage, current), for example, 'using operational amplifiers to solve differential equations.' Avoid incorrect descriptions such as 'digital signal processing.'
Q: Which code should hybrid computers be classified under?
A: Hybrid computers have both analog and digital computing functions and are usually classified according to the main function. If analog computation is primary, they may be classified under 8471.10; if digital computation is primary, under 8471.50. Technical documentation must be provided for customs determination.
Q: Are there special requirements for importing used analog computers?
A: Used analog computers may involve import regulation of used mechanical and electrical products, requiring pre-shipment inspection and other procedures. During declaration, 'used' must be stated and relevant certificates provided; the HS code remains 8471.10.
Q: Is the classification of analog computers affected by size or weight?
A: No. HS code 8471.10 is mainly based on the working principle, not size or weight. Whether a large analog computer or a small module, as long as the core is analog computation, it is classified under this subheading.
⚠️ Disclaimer: HS code classification, declaration elements, tariff rates and regulatory conditions on this page are for reference only and do not constitute legal advice on customs classification. Tariff rates and regulations are subject to change; the latest announcements from the General Administration of Customs and on-site determinations shall prevail. Please consult professional customs brokers or customs authorities before import/export.