Chapter 84 is the core chapter in HS classification covering mechanical equipment, including power machinery, metalworking machine tools, industrial robots, office equipment, automatic data processing equipment, transmission devices, refrigeration equipment, molds, etc. Most goods in this chapter are machines driven by power or directly driven by non-electric power, used for producing, processing, handling, or controlling materials. As plastic processing machinery, blow molding machines are a typical commodity of this chapter. Heading 8477 covers machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter, including injection molding machines, extruders, blow molding machines, vacuum molding machines and other thermoforming machines. Under this heading, goods are subdivided by processing method, and blow molding machines are listed as a separate subheading, reflecting their importance in plastic molding equipment. The first 2 digits 84: indicates Chapter 84, namely nuclear reactors, boilers, machinery and mechanical appliances and parts thereof. The 3rd-4th digits 77: indicates heading 8477, namely machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter. The 5th-6th digits 30: indicates subheading 847730, specifically referring to blow molding machines. Note that under heading 8477 there are also 847710 (injection molding machines), 847720 (extruders), 847740 (vacuum molding and other thermoforming machines), 847751 to 847759 (other molding or forming machines), etc. Blow molding machines form hollow products by inflating thermoplastic parisons and making them conform to molds, and belong to plastic processing machinery. Because the processed object is plastics and they are not named in other headings (such as 8475 or 8479), they are classified under 8477. Compared with injection molding machines (847710) and extruders (847720), blow molding machines have a unique inflation molding process, so they are listed under the separate subheading 847730.
Chapter
Chapter 84 is the core chapter in HS classification covering mechanical equipment, including power machinery, metalworking machine tools, industrial robots, office equipment, automatic data processing equipment, transmission devices, refrigeration equipment, molds, etc. Most goods in this chapter are machines driven by power or directly driven by non-electric power, used for producing, processing, handling, or controlling materials. As plastic processing machinery, blow molding machines are a typical commodity of this chapter.
Heading
Heading 8477 covers machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter, including injection molding machines, extruders, blow molding machines, vacuum molding machines and other thermoforming machines. Under this heading, goods are subdivided by processing method, and blow molding machines are listed as a separate subheading, reflecting their importance in plastic molding equipment.
Digit Breakdown
The first 2 digits 84: indicates Chapter 84, namely nuclear reactors, boilers, machinery and mechanical appliances and parts thereof. The 3rd-4th digits 77: indicates heading 8477, namely machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this chapter. The 5th-6th digits 30: indicates subheading 847730, specifically referring to blow molding machines. Note that under heading 8477 there are also 847710 (injection molding machines), 847720 (extruders), 847740 (vacuum molding and other thermoforming machines), 847751 to 847759 (other molding or forming machines), etc.
Classification Basis
Blow molding machines form hollow products by inflating thermoplastic parisons and making them conform to molds, and belong to plastic processing machinery. Because the processed object is plastics and they are not named in other headings (such as 8475 or 8479), they are classified under 8477. Compared with injection molding machines (847710) and extruders (847720), blow molding machines have a unique inflation molding process, so they are listed under the separate subheading 847730.
📝 Declaration Elements
Product Name: The specific name of the declared commodity, which should accurately reflect the machine type, such as "blow molding machine" or "hollow blow molding machine". Use: Explain the machine's processing object and final product, such as "used to produce hollow products such as plastic bottles and drums". Brand: Fill in the machine brand; if there is no brand, fill in "no brand". Model: Fill in the specific model of the machine, such as "BM-500". Processing Method: Explain the specific blow molding method, such as "extrusion blow molding", "injection blow molding", "stretch blow molding". Applicable Raw Materials: Fill in the types of plastics the machine can process, such as "PE, PP, PET". Maximum Product Capacity: Fill in the maximum volume of hollow products the machine can produce, in liters. Power: Fill in the total power of the machine, in kilowatts. Customs declaration example:
Product Name: Blow molding machine
Use: Used to produce PE plastic bottles with a capacity below 5L
Brand: ABC
Model: BM-200
Processing Method: Extrusion blow molding
Applicable Raw Materials: PE
Maximum Product Capacity: 5L
Power: 15KW
Remarks: None
(Note: Actual declaration must provide detailed specifications, functional principles, etc. according to customs requirements) Failure to distinguish the blow molding method (extrusion/injection/stretch), which may result in a request for supplementary explanation. Confusing blow molding machines with injection molding machines, leading to classification errors. Omitting key elements such as brand and model, affecting customs document review.
Product Name
The specific name of the declared commodity, which should accurately reflect the machine type, such as "blow molding machine" or "hollow blow molding machine".
⚠️ Mistakenly declared as "injection molding machine" or "extruder".
Use
Explain the machine's processing object and final product, such as "used to produce hollow products such as plastic bottles and drums".
⚠️ Only writing "plastic processing", which is too general.
Brand
Fill in the machine brand; if there is no brand, fill in "no brand".
⚠️ Mistakenly filling in the model as the brand.
Model
Fill in the specific model of the machine, such as "BM-500".
⚠️ Omitting the model or filling it in incorrectly.
Processing Method
Explain the specific blow molding method, such as "extrusion blow molding", "injection blow molding", "stretch blow molding".
⚠️ Failure to distinguish the blow molding method, leading to classification disputes.
Applicable Raw Materials
Fill in the types of plastics the machine can process, such as "PE, PP, PET".
⚠️ Filling in "plastic" without specificity.
Maximum Product Capacity
Fill in the maximum volume of hollow products the machine can produce, in liters.
⚠️ Incorrect unit or not filled in.
Power
Fill in the total power of the machine, in kilowatts.
⚠️ Omission or incorrect unit.
Example： Customs declaration example:
Product Name: Blow molding machine
Use: Used to produce PE plastic bottles with a capacity below 5L
Brand: ABC
Model: BM-200
Processing Method: Extrusion blow molding
Applicable Raw Materials: PE
Maximum Product Capacity: 5L
Power: 15KW
Remarks: None
(Note: Actual declaration must provide detailed specifications, functional principles, etc. according to customs requirements)
Common Mistakes：
Failure to distinguish the blow molding method (extrusion/injection/stretch), which may result in a request for supplementary explanation.
Confusing blow molding machines with injection molding machines, leading to classification errors.
Omitting key elements such as brand and model, affecting customs document review.
🎯 Classification Logic
The core basis for classification is the machine's working principle and processing object. Blow molding machines belong to plastic processing machinery and are not named in other headings of Chapter 84, so they are classified under 8477. Subheading 847730 specifically refers to blow molding machines, and it is necessary to confirm whether the machine forms hollow products by inflating parisons to make them conform to molds. If a machine has both blow molding and injection molding functions, it must be classified according to the main function or whether it can be separated. 847710 Injection molding machine: Injection molding machines form products by injecting molten plastic into a closed mold, while blow molding machines form hollow products by inflating parisons. Their processes and products are different. 847720 Extruder: Extruders continuously extrude plastic profiles or parisons, while blow molding machines use parisons for inflation molding. An extruder may be a component of a blow molding machine, but when declared separately it is classified under 847720. 847740 Vacuum molding and other thermoforming machines: Vacuum molding forms plastic sheets by vacuum adsorption, while blow molding machines form products by inflating parisons. Their molding principles are different. 847780 Other rubber or plastics working machinery: This subheading is for other machines not named under 8477; blow molding machines already have a dedicated subheading, so they are not classified here. 848071 Injection or compression molds for plastics or rubber: 848071 is for molds, while blow molding machines are machines. Their uses and functions are different. Check whether the machine forms hollow products by inflating parisons. Confirm whether it has injection molding functions; if it has both, determine the main function. Verify whether it is declared separately; if it is part of a production line, it must be classified as a whole. Confirm whether declaration elements such as brand, model, and processing method are complete. Check customs classification decisions or advance rulings to ensure there are no special provisions.
Basis
The core basis for classification is the machine's working principle and processing object. Blow molding machines belong to plastic processing machinery and are not named in other headings of Chapter 84, so they are classified under 8477. Subheading 847730 specifically refers to blow molding machines, and it is necessary to confirm whether the machine forms hollow products by inflating parisons to make them conform to molds. If a machine has both blow molding and injection molding functions, it must be classified according to the main function or whether it can be separated.
Confused Codes：
847710 - Injection molding machine
Injection molding machines form products by injecting molten plastic into a closed mold, while blow molding machines form hollow products by inflating parisons. Their processes and products are different.
847720 - Extruder
Extruders continuously extrude plastic profiles or parisons, while blow molding machines use parisons for inflation molding. An extruder may be a component of a blow molding machine, but when declared separately it is classified under 847720.
847740 - Vacuum molding and other thermoforming machines
Vacuum molding forms plastic sheets by vacuum adsorption, while blow molding machines form products by inflating parisons. Their molding principles are different.
847780 - Other rubber or plastics working machinery
This subheading is for other machines not named under 8477; blow molding machines already have a dedicated subheading, so they are not classified here.
848071 - Injection or compression molds for plastics or rubber
848071 is for molds, while blow molding machines are machines. Their uses and functions are different.
Self-Check：
✓ Check whether the machine forms hollow products by inflating parisons.
✓ Confirm whether it has injection molding functions; if it has both, determine the main function.
✓ Verify whether it is declared separately; if it is part of a production line, it must be classified as a whole.
✓ Confirm whether declaration elements such as brand, model, and processing method are complete.
✓ Check customs classification decisions or advance rulings to ensure there are no special provisions.
❓ FAQ
What is the difference in HS codes between blow molding machines and injection molding machines? Blow molding machines are classified under 847730, and injection molding machines under 847710. Their processes are different: blow molding machines form hollow products by inflating parisons, while injection molding machines form products by injecting molten plastic into molds. When declaring, the working principle must be accurately described to avoid confusion. If a blow molding machine has an extrusion device, how should it be classified? If the extrusion device is integrated with the blow molding machine and the main function is blow molding, the whole is classified under 847730. If the extrusion device can be used independently and is declared separately, it may be classified under 847720. Judgment must be based on the machine's main function and structure. How should "Processing Method" be filled in among the declaration elements for a blow molding machine? The processing method should specifically state the type of blow molding, such as "extrusion blow molding", "injection blow molding", or "stretch blow molding". Different methods affect classification, but all are classified under 847730. When filling it in, it must be consistent with the machine's actual working principle. Are imported used blow molding machines classified under the same HS code? Yes, used blow molding machines are still classified under 847730. However, when importing, information such as machine condition and years of use must be provided, and import regulatory requirements for used mechanical and electrical products may be involved. Which HS code should parts of blow molding machines be classified under? If the parts are dedicated parts for blow molding machines, they are generally classified under 847790; if they are general-purpose parts, they are classified under the corresponding heading according to material. Judgment must be based on the purpose of the part and whether it is dedicated. How can I check the import tariff rate for blow molding machines? It can be checked through the official website of the General Administration of Customs, HS code query platforms, or by consulting a customs broker. Tariff rates vary by country, trade agreement, and origin of goods, so the latest customs publication should be taken as authoritative. Are blow molding machines and film blowing machines under the same HS code? No. Film blowing machines are used to produce plastic films and are usually classified under 847720 (extruders) or 847780; blow molding machines are used to produce hollow products and are classified under 847730. Their processing objects and products are different. When exporting blow molding machines to different countries, are the HS codes the same? The first 6 digits of the HS code are unified internationally, but countries may subdivide the later digits differently. When exporting, the complete code must be confirmed according to the customs requirements of the destination country, and attention should be paid to differences in declaration elements.
Q: What is the difference in HS codes between blow molding machines and injection molding machines?
A: Blow molding machines are classified under 847730, and injection molding machines under 847710. Their processes are different: blow molding machines form hollow products by inflating parisons, while injection molding machines form products by injecting molten plastic into molds. When declaring, the working principle must be accurately described to avoid confusion.
Q: If a blow molding machine has an extrusion device, how should it be classified?
A: If the extrusion device is integrated with the blow molding machine and the main function is blow molding, the whole is classified under 847730. If the extrusion device can be used independently and is declared separately, it may be classified under 847720. Judgment must be based on the machine's main function and structure.
Q: How should "Processing Method" be filled in among the declaration elements for a blow molding machine?
A: The processing method should specifically state the type of blow molding, such as "extrusion blow molding", "injection blow molding", or "stretch blow molding". Different methods affect classification, but all are classified under 847730. When filling it in, it must be consistent with the machine's actual working principle.
Q: Are imported used blow molding machines classified under the same HS code?
A: Yes, used blow molding machines are still classified under 847730. However, when importing, information such as machine condition and years of use must be provided, and import regulatory requirements for used mechanical and electrical products may be involved.
Q: Which HS code should parts of blow molding machines be classified under?
A: If the parts are dedicated parts for blow molding machines, they are generally classified under 847790; if they are general-purpose parts, they are classified under the corresponding heading according to material. Judgment must be based on the purpose of the part and whether it is dedicated.
Q: How can I check the import tariff rate for blow molding machines?
A: It can be checked through the official website of the General Administration of Customs, HS code query platforms, or by consulting a customs broker. Tariff rates vary by country, trade agreement, and origin of goods, so the latest customs publication should be taken as authoritative.
Q: Are blow molding machines and film blowing machines under the same HS code?
A: No. Film blowing machines are used to produce plastic films and are usually classified under 847720 (extruders) or 847780; blow molding machines are used to produce hollow products and are classified under 847730. Their processing objects and products are different.
Q: When exporting blow molding machines to different countries, are the HS codes the same?
A: The first 6 digits of the HS code are unified internationally, but countries may subdivide the later digits differently. When exporting, the complete code must be confirmed according to the customs requirements of the destination country, and attention should be paid to differences in declaration elements.
⚠️ 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.