Harmonized System Code Classification

The first two digits of the HS code starting with 90 typically refer to optical, photographic, cinematographic, measuring, testing, analyzing, and control instruments and their parts and accessories.

Specifically, the 90 category includes the following main categories:

• Optical instruments: Including glasses, telescopes, microscopes, prisms, lenses, etc.
• Photographic and cinematographic instruments: Including cameras, video cameras, movie projectors, projectors, etc.
• Measuring instruments: Including instruments for measuring length, weight, volume, angles, temperature, pressure, etc.
• Testing and analyzing instruments: Including laboratory equipment, medical diagnostic equipment, chemical analysis instruments, etc.
• Control instruments: Including automatic control equipment, industrial automation equipment, etc.

Why is it category 90?

These products are all related to precise measurement, observation, analysis, and control, and usually require high technical content and professional knowledge. They play important roles in scientific research, industrial production, healthcare, environmental protection, and other fields.

Therefore, customs classify these products into category 90 to facilitate the special management and statistics of these high-tech, high-value-added products.

In summary, the core feature of goods with HS codes starting with 90 is precise measurement, observation, analysis, and control.

First four digits explanation:
9022:

Instruments based on X-rays or α, β, γ, or other ionizing radiation, regardless of whether they are used for medical, surgical, dental, or veterinary purposes, including radiographic or radiotherapy instruments, X-ray tubes and other X-ray generators, high-voltage generators, control panels and tables, screens, examination or treatment tables, chairs, etc.; their parts and accessories.

Six-digit explanation:
HS code: 9022.90

Classification:
Instruments based on X-rays or α, β, γ, or other ionizing radiation, regardless of whether they are used for medical, surgical, dental, or veterinary purposes, including radiographic or radiotherapy instruments, X-ray tubes and other X-ray generators, high-voltage generators, control panels and tables, screens, examination or treatment tables, chairs, etc.; their parts and accessories.

Specific meaning:

• Other: Refers to other instruments, parts, and accessories not included in the above specific categories.
• Other: Further specifies other parts and accessories not included in more specific categories.
• Other: Further specifies other parts and accessories not included in more specific categories.
• Other: The most specific category, referring to other parts and accessories not included in more specific categories.

Eight to ten-digit explanation:
HS code: 9022904000
Classification: Applicable to instruments based on X-rays or α, β, γ, or other ionizing radiation, regardless of whether they are used for medical, surgical, dental, or veterinary purposes, including radiographic or radiotherapy instruments, X-ray tubes and other X-ray generators, high-voltage generators, control panels and tables, screens, examination or treatment tables, chairs, etc.; among them: other, including parts and accessories → parts and accessories of X-ray tubes
Explanation: This HS code belongs to instruments based on X-rays or α, β, γ, or other ionizing radiation, including radiographic or radiotherapy instruments, X-ray tubes and related accessories, specifically classified as parts and accessories of X-ray tubes. This HS code covers instruments and related parts and accessories used in medical, surgical, dental, or veterinary purposes.

Examples of products under this HS code:

• X-ray tube parts
• X-ray generator components
• High-voltage generator parts
• Radiographic machine accessories
• Radiotherapy machine components
• Control panel parts for X-ray equipment
• Examination table parts for X-ray use
• X-ray screen components
• Diagnostic imaging system parts
• Radiation therapy chair components