Chapter 84 covers nuclear reactors, boilers, machinery, mechanical appliances and their parts, and is the most important machinery chapter in the HS classification. This chapter includes power machinery, agricultural machinery, machine tools, office equipment, automatic data processing equipment, bearings, transmission devices, etc. CNC stone grinding machines, as machine tools for processing stone by grinding, fall within the scope of processing machinery of this chapter. Heading 8464 covers machine tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials, or for cold working glass. It includes sawing, grinding, polishing, cutting and other machine tools. CNC stone grinding machines process stone by grinding and fall under the grinding machine category of this heading. Code 846420 consists of 6 digits: the first 2 digits 84 indicate Chapter 84 (machinery and mechanical appliances); digits 3-4, 64, indicate heading 8464 (machine tools for working stone, ceramics, etc.); digits 5-6, 20, indicate subheading 846420, specifically grinding or polishing machines. Note: 846420 covers only grinding and polishing machines, not sawing machines (846410) or other machine tools. The product is a CNC stone grinding machine, whose core function is grinding stone, conforming to the description of heading 8464. Subheading 846420 explicitly includes grinding and polishing machines. Therefore, it is classified under 846420, rather than 846410 (sawing machines) or 846490 (other machine tools).
Chapter
Chapter 84 covers nuclear reactors, boilers, machinery, mechanical appliances and their parts, and is the most important machinery chapter in the HS classification. This chapter includes power machinery, agricultural machinery, machine tools, office equipment, automatic data processing equipment, bearings, transmission devices, etc. CNC stone grinding machines, as machine tools for processing stone by grinding, fall within the scope of processing machinery of this chapter.
Heading
Heading 8464 covers machine tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials, or for cold working glass. It includes sawing, grinding, polishing, cutting and other machine tools. CNC stone grinding machines process stone by grinding and fall under the grinding machine category of this heading.
Digit Breakdown
Code 846420 consists of 6 digits: the first 2 digits 84 indicate Chapter 84 (machinery and mechanical appliances); digits 3-4, 64, indicate heading 8464 (machine tools for working stone, ceramics, etc.); digits 5-6, 20, indicate subheading 846420, specifically grinding or polishing machines. Note: 846420 covers only grinding and polishing machines, not sawing machines (846410) or other machine tools.
Classification Basis
The product is a CNC stone grinding machine, whose core function is grinding stone, conforming to the description of heading 8464. Subheading 846420 explicitly includes grinding and polishing machines. Therefore, it is classified under 846420, rather than 846410 (sawing machines) or 846490 (other machine tools).
📝 Declaration Elements
Product Name: The Chinese and foreign language names of the declared commodity shall accurately reflect the product attributes, such as 'CNC stone grinding machine'. Use: Describe the processing object and working scenario, such as 'for grinding and polishing marble, granite and other stone materials'. Working Principle: Briefly describe the grinding method, such as 'grinding the stone surface by rotating grinding wheels'. Brand: Fill in the manufacturer or brand name; if there is no brand, write 'no brand'. Model: Fill in the equipment model, such as 'CNC-2000'. CNC Device: State whether a CNC system is equipped, such as 'equipped with CNC system, programmable control'. Power: Fill in the main motor power, such as '15kW'. Product Name: CNC stone grinding machine; Use: for grinding and polishing marble and granite slabs; Working Principle: grinding the stone surface by rotating grinding wheels; Brand: XX; Model: CNC-2000; CNC Device: equipped with CNC system; Power: 15kW. Misdeclaring a CNC grinding machine as an ordinary grinding machine without highlighting the CNC function, leading to incorrect subheading classification. Use description is not specific and does not clearly indicate stone processing, which may lead to misclassification under metalworking machine tools. Working principle incorrectly written as 'cutting', which may lead to classification under 846410 sawing machines.
Product Name
The Chinese and foreign language names of the declared commodity shall accurately reflect the product attributes, such as 'CNC stone grinding machine'.
⚠️ Writing only 'grinding machine' without indicating CNC or stone processing, leading to classification disputes.
Use
Describe the processing object and working scenario, such as 'for grinding and polishing marble, granite and other stone materials'.
⚠️ Vaguely writing 'industrial use' without specifying stone, which may lead to misclassification under other headings.
Working Principle
Briefly describe the grinding method, such as 'grinding the stone surface by rotating grinding wheels'.
⚠️ Incorrectly describing it as 'cutting' or 'milling', leading to classification errors.
Brand
Fill in the manufacturer or brand name; if there is no brand, write 'no brand'.
⚠️ Confusing brand with model, or omitting the brand.
Model
Fill in the equipment model, such as 'CNC-2000'.
⚠️ Incomplete model entry or confusion with serial number.
CNC Device
State whether a CNC system is equipped, such as 'equipped with CNC system, programmable control'.
⚠️ Failure to indicate CNC, which may result in classification under a non-CNC machine tool subheading.
Power
Fill in the main motor power, such as '15kW'.
⚠️ Incorrect power unit or omission.
Example： Product Name: CNC stone grinding machine; Use: for grinding and polishing marble and granite slabs; Working Principle: grinding the stone surface by rotating grinding wheels; Brand: XX; Model: CNC-2000; CNC Device: equipped with CNC system; Power: 15kW.
Common Mistakes：
Misdeclaring a CNC grinding machine as an ordinary grinding machine without highlighting the CNC function, leading to incorrect subheading classification.
Use description is not specific and does not clearly indicate stone processing, which may lead to misclassification under metalworking machine tools.
Working principle incorrectly written as 'cutting', which may lead to classification under 846410 sawing machines.
🎯 Classification Logic
Classification basis: The product is a CNC stone grinding machine, whose main function is grinding stone. Heading 8464 explicitly includes machine tools for working stone, ceramics, etc., and subheading 846420 covers grinding and polishing machines. Therefore, according to GIR 1 and 6, it should be classified under 846420. 846410 Stone sawing machines: 846410 is sawing machines, used for cutting stone; 846420 is grinding machines, used for grinding and polishing. Different functions lead to different classifications. 846490 Other stone working machine tools: 846490 includes stone working machine tools not elsewhere specified, such as milling machines, drilling machines, etc.; grinding machines are specifically named and should be classified under 846420. 846090 Metal grinding machines: 846090 is grinding machines for working metal, with metal as the processing object; 846420 has stone as the processing object, with different materials. 847989 Other machinery not elsewhere specified: 847989 is machinery not elsewhere specified; if grinding machines were not specifically named, they might be classified here, but 846420 specifically names them, so it takes priority. Is the processing object stone, ceramics or other mineral materials? Is it processed by grinding or polishing? Is it equipped with a CNC system? Does it belong to grinding or polishing machines? Are other processing methods such as sawing and milling excluded?
Basis
Classification basis: The product is a CNC stone grinding machine, whose main function is grinding stone. Heading 8464 explicitly includes machine tools for working stone, ceramics, etc., and subheading 846420 covers grinding and polishing machines. Therefore, according to GIR 1 and 6, it should be classified under 846420.
Confused Codes：
846410 - Stone sawing machines
846410 is sawing machines, used for cutting stone; 846420 is grinding machines, used for grinding and polishing. Different functions lead to different classifications.
846490 - Other stone working machine tools
846490 includes stone working machine tools not elsewhere specified, such as milling machines, drilling machines, etc.; grinding machines are specifically named and should be classified under 846420.
846090 - Metal grinding machines
846090 is grinding machines for working metal, with metal as the processing object; 846420 has stone as the processing object, with different materials.
847989 - Other machinery not elsewhere specified
847989 is machinery not elsewhere specified; if grinding machines were not specifically named, they might be classified here, but 846420 specifically names them, so it takes priority.
Self-Check：
✓ Is the processing object stone, ceramics or other mineral materials?
✓ Is it processed by grinding or polishing?
✓ Is it equipped with a CNC system?
✓ Does it belong to grinding or polishing machines?
✓ Are other processing methods such as sawing and milling excluded?
❓ FAQ
What is the HS code for CNC stone grinding machines? CNC stone grinding machines should be classified under HS code 846420. This code covers grinding and polishing machines for working stone, ceramics and other mineral materials. If it is CNC, it is still classified under this code because the subheading does not further distinguish between CNC and non-CNC. How to distinguish between 846420 and 846410? 846410 is sawing machines, used for cutting stone; 846420 is grinding or polishing machines, used for grinding or polishing stone surfaces. Determine according to the processing method: cutting goes to 846410, grinding goes to 846420. What elements should be noted when declaring CNC stone grinding machines? It is necessary to declare the product name, use, working principle, brand, model, CNC device, power, etc. Emphasize the 'CNC' and 'grinding' functions to avoid misclassification as sawing machines or metalworking machine tools. If a grinding machine can both grind and polish, how should it be classified? 846420 covers both grinding and polishing machines. Therefore, regardless of whether the main function is grinding or polishing, as long as the processing object is stone, it is classified under 846420. How to check the tax rate for imported CNC stone grinding machines? The tax rate must be determined based on country of origin, trade agreements, etc. It can be checked in China Customs' Import and Export Tariff or through the General Administration of Customs website or Single Window. The specific tax rate shall be subject to the actual declaration. What are the regulatory conditions for CNC stone grinding machines? Usually an automatic import license (O certificate) or mechanical and electrical product import license is required, depending on equipment parameters and trade mode. It is recommended to consult the local customs or customs broker. Can used CNC stone grinding machines be imported? They can be imported, but they must comply with regulations on the import of used mechanical and electrical products, and may require pre-shipment inspection, filing, etc. When declaring, indicate 'used' and the years of use, and provide relevant certificates. After classification under 846420, how should the customs declaration form be filled out? The customs declaration form must fill in HS code 846420 and declare the elements as required. The commodity name should be accurate, such as 'CNC stone grinding machine', with detailed specifications and model attached.
Q: What is the HS code for CNC stone grinding machines?
A: CNC stone grinding machines should be classified under HS code 846420. This code covers grinding and polishing machines for working stone, ceramics and other mineral materials. If it is CNC, it is still classified under this code because the subheading does not further distinguish between CNC and non-CNC.
Q: How to distinguish between 846420 and 846410?
A: 846410 is sawing machines, used for cutting stone; 846420 is grinding or polishing machines, used for grinding or polishing stone surfaces. Determine according to the processing method: cutting goes to 846410, grinding goes to 846420.
Q: What elements should be noted when declaring CNC stone grinding machines?
A: It is necessary to declare the product name, use, working principle, brand, model, CNC device, power, etc. Emphasize the 'CNC' and 'grinding' functions to avoid misclassification as sawing machines or metalworking machine tools.
Q: If a grinding machine can both grind and polish, how should it be classified?
A: 846420 covers both grinding and polishing machines. Therefore, regardless of whether the main function is grinding or polishing, as long as the processing object is stone, it is classified under 846420.
Q: How to check the tax rate for imported CNC stone grinding machines?
A: The tax rate must be determined based on country of origin, trade agreements, etc. It can be checked in China Customs' Import and Export Tariff or through the General Administration of Customs website or Single Window. The specific tax rate shall be subject to the actual declaration.
Q: What are the regulatory conditions for CNC stone grinding machines?
A: Usually an automatic import license (O certificate) or mechanical and electrical product import license is required, depending on equipment parameters and trade mode. It is recommended to consult the local customs or customs broker.
Q: Can used CNC stone grinding machines be imported?
A: They can be imported, but they must comply with regulations on the import of used mechanical and electrical products, and may require pre-shipment inspection, filing, etc. When declaring, indicate 'used' and the years of use, and provide relevant certificates.
Q: After classification under 846420, how should the customs declaration form be filled out?
A: The customs declaration form must fill in HS code 846420 and declare the elements as required. The commodity name should be accurate, such as 'CNC stone grinding machine', with detailed specifications and model attached.
⚠️ 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.