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 covers the following main categories:

• Optical instruments: Including glasses, telescopes, microscopes, prisms, lenses, etc.
• Photographic and cinematographic instruments: Including cameras, video cameras, film projectors, projectors, etc.
• Measuring instruments: Including instruments for measuring length, weight, capacity, angle, temperature, pressure, and other related measurements.
• Testing and analyzing instruments: Including laboratory equipment, medical diagnostic equipment, chemical analysis instruments, etc.
• Control instruments: Including automatic control devices, industrial automation equipment, etc.

Why is it classified as 90?

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

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

In short, the core characteristics of goods with HS codes starting with 90 are precise measurement, observation, analysis, and control.

First four digits explanation: 9027: Instruments and devices for physical or chemical analysis (e.g., polarimeters, refractometers, spectrometers, gas or smoke analysis devices); instruments and devices for measuring or checking viscosity, porosity, expansion, surface tension, or similar properties; instruments and devices for measuring or checking heat, sound, or light quantity (including exposure meters); microtomes; their parts and accessories.

Six-digit explanation: HS code: 9027.50

Classification: Instruments and devices for physical or chemical analysis (e.g., polarimeters, refractometers, spectrometers, gas or smoke analysis devices); instruments and devices for measuring or checking viscosity, porosity, expansion, surface tension, or similar properties; instruments and devices for measuring or checking heat, sound, or light quantity (including exposure meters); microtomes; their parts and accessories: --> Other instruments and devices using optical radiation (ultraviolet, visible light, infrared): --> Other: --> Other: --> Other

Meaning: This HS code covers instruments and devices that use optical radiation (ultraviolet, visible light, infrared) for physical or chemical analysis, as well as parts and accessories of other related instruments and devices not specifically listed.

Eight to ten-digit explanation: hscode: 9027501000 Classification: Instruments and devices for physical or chemical analysis (e.g., polarimeters, refractometers, spectrometers, gas or smoke analysis devices); instruments and devices for measuring or checking viscosity, porosity, expansion, surface tension, or similar properties; instruments and devices for measuring or checking heat, sound, or light quantity (including exposure meters); microtomes; their parts and accessories: --> Other instruments and devices using optical radiation (ultraviolet, visible light, infrared): --> Exposure meters Explanation: This HS code belongs to the classification of instruments and devices for physical or chemical analysis, specifically referring to other instruments and devices using optical radiation (ultraviolet, visible light, infrared), and is further classified as exposure meters.

Product examples: * Exposure meters used in photography * Spectrophotometers for chemical analysis * Refractometers for measuring the concentration of solutions * Polarimeters for measuring optical activity in chemical substances * UV-Vis spectrometers for analyzing light absorption in samples