Chapter 90 is the chapter in the HS classification system covering optical, photographic, cinematographic, measuring, checking, medical or surgical instruments and apparatus, and precision instruments and apparatus, ranging from simple spectacle lenses to complex particle accelerators. The core feature of this chapter is that the goods are highly precise and technologically advanced, used in professional fields such as measurement, testing, medical treatment, and industrial control. Heading 9022 specifically covers ionizing radiation equipment such as X-rays, alpha rays, beta rays, and gamma rays, whether or not for medical, surgical, dental, or veterinary use, all falling within this chapter. Heading 9022 covers instruments and apparatus for X-rays or alpha rays, beta rays, gamma rays, or other ionizing radiation, including radiography, radiotherapy equipment, X-ray tubes, high-voltage generators, control panels, screens, examination tables, etc. This heading includes both medical diagnostic and therapeutic equipment and non-medical radiation equipment for industrial non-destructive testing, security inspection, and scientific research. Under 9022, subheadings are further divided by use and radiation type, such as 9022.12 for computed tomography equipment and 9022.21 for gamma ray equipment. Code 902221 is a 6-digit subheading. The first 2 digits "90" represent Chapter 90, the chapter for optical, medical, and other precision instruments, indicating that the goods belong to the category of high-tech instruments and equipment. Digits 3-4 "22" represent heading 9022, i.e., equipment using ionizing radiation such as X-rays, alpha rays, beta rays, and gamma rays, clarifying that the goods operate using ionizing radiation. Digits 5-6 "21" represent subheading 902221, specifically referring to gamma ray equipment, whether or not for medical, surgical, dental, or veterinary use. Gamma rays are produced by the decay of radioactive isotopes and have strong penetrating power, commonly used in industrial flaw detection, radiotherapy, and security inspection. This subheading is listed alongside 9022.19 (other X-ray equipment for medical use) and 9022.29 (other gamma ray equipment for non-medical use), emphasizing that the radiation type is gamma rays. The goods are vehicle-mounted gamma ray equipment, whose core function is to use gamma rays for testing or treatment and which is installed on a vehicle for mobile use. In classification, the radiation type is first determined to be gamma rays rather than X-rays or other particle rays, so it is classified under 9022.21 rather than 9022.19 or 9022.30. Second, the vehicle-mounted feature does not change its basic classification as gamma ray equipment, because 9022.21 does not limit whether it is fixed or mobile. If the equipment uses only X-rays, it should be classified under 9022.19 or 9022.13, etc.; if it is gamma ray but for non-medical use, it is still classified under 9022.21, because this subheading does not distinguish use.

Product name: The Chinese and foreign language names of the declared goods should accurately reflect the equipment type, such as "vehicle-mounted gamma ray inspection equipment" or "vehicle-mounted gamma ray treatment system." Use: Explain the specific application field of the equipment, such as industrial non-destructive testing, medical radiotherapy, security scanning, etc., which helps confirm the subheading. Working principle: Briefly describe how the equipment generates and uses gamma rays, such as radioactive isotope source, detector type, imaging method, etc. Brand type: Fill in the brand name or "no brand," as well as the model, to facilitate customs identification of the goods. Vehicle-mounted form: Explain the vehicle type and the integration method of the equipment with the vehicle, such as vehicle-mounted, mobile, trailer-mounted, etc. Radiation source type: Specify the radionuclide type, such as cobalt-60, cesium-137, etc., and the activity (becquerels). Whether for medical use: Declare whether the equipment is used for medical diagnosis or treatment, which affects regulatory conditions and subheading determination. Product name: vehicle-mounted gamma ray industrial CT inspection system; Use: for non-destructive testing of large workpieces; Working principle: uses a cobalt-60 radioactive source to generate gamma rays, which are received by a detector after penetrating the workpiece, and a computer reconstructs the image; Brand type: no brand; Model: GCT-2000; Vehicle-mounted form: integrated on a truck chassis, mobile; Radiation source type: cobalt-60, activity 1.11×10^12 Bq; Whether for medical use: no. Mistakenly declaring gamma ray equipment as X-ray equipment, leading to incorrect classification under 9022.19. Failing to declare the vehicle-mounted form, which may cause it to be mistaken for fixed equipment and affect regulatory conditions. Ignoring the radiation source type and activity, failing to meet customs regulatory requirements for radioactive items.

The core basis for classification is radiation type and use. According to HS notes, subheading 9022.21 explicitly includes gamma ray equipment, whether or not for medical use. The core of vehicle-mounted gamma ray equipment is the gamma ray generating device; the vehicle is only the carrier, so the vehicle part is not considered in classification unless the vehicle itself constitutes a complete article whose main function is transport. If the equipment has both X-ray and gamma ray functions, it is classified according to the main function. In addition, it is necessary to confirm whether the equipment belongs under 9022.21 rather than 9022.29 (other gamma ray equipment for non-medical use), but 9022.21 already covers all gamma ray equipment, so there is no need to distinguish use. 902219 Other X-ray equipment for medical use: This code is for X-ray equipment, while this product uses gamma rays; the radiation generation principle and energy are different, and gamma rays usually come from radioactive isotopes. 902229 Other gamma ray equipment for non-medical use: This code is for gamma ray equipment but for non-medical use, while 902221 covers all gamma ray equipment, whether medical or not, so 902221 takes precedence. 902230 X-ray tubes: X-ray tubes are the core component for generating X-rays, while this product is complete gamma ray equipment, including a radioactive source and detection system. 870590 Other special purpose vehicles: If the vehicle itself constitutes the main function and the equipment is ancillary, it may be classified under 8705, but the main function of this product is gamma ray inspection, so it is classified under 9022. Is it clearly using gamma rays rather than X-rays? Has the vehicle-mounted form and vehicle type been declared? Have the radionuclide type and activity been provided? Has medical or non-medical use been distinguished? Have the HS notes for the interpretation of 9022.21 been checked?

What is the difference in HS codes between vehicle-mounted gamma ray equipment and vehicle-mounted X-ray equipment? Vehicle-mounted gamma ray equipment is classified under 902221 because it uses gamma rays; vehicle-mounted X-ray equipment is classified under 902219 (medical use) or 902229 (non-medical use) according to use. The radiation types are different: gamma rays come from radioactive isotopes, while X-rays are generated by X-ray tubes, and they must be strictly distinguished in classification. If the equipment has both gamma ray and X-ray functions, how should it be classified? According to General Interpretative Rule 3 (b), it should be classified according to the main function. If the main function is gamma ray inspection, it is classified under 902221; if the main function is X-ray, it is classified under 902219 or 902229. Technical documentation proving the main function is required. Is a radiation safety license required at the time of declaration? Yes. Imported radioactive equipment generally requires a radiation safety license, approval documents for the import of radioactive isotopes, etc., subject to the requirements of customs and environmental protection authorities. The radiation source type and activity should be truthfully filled in at declaration. Does the vehicle-mounted form affect HS code classification? Generally no, because 9022.21 does not limit whether the equipment is vehicle-mounted. However, if the vehicle itself constitutes a complete article and its main function is transport, it may be classified under 8705. This must be judged according to the degree of integration between the equipment and the vehicle. Are the tax rates for 902221 and 902229 the same? The tax rates may differ; the latest customs tariff should be consulted. However, 902221 covers all gamma ray equipment, while 902229 is other gamma ray equipment for non-medical use. In actual classification, 902221 takes precedence because its subheading text is more specific. How can the regulatory conditions for 902221 be checked? The regulatory conditions for this code can be checked through the official website of the General Administration of Customs of China or the "Single Window," usually involving radioactive item transport, environmental protection department approval, etc. It is advisable to consult a professional customs broker or customs authority. When exporting vehicle-mounted gamma ray equipment to the EU, is the HS code the same? The first 6 digits of the EU HS code are the same as those of China, both 902221, but the later digits may differ. When exporting, the specific code and regulatory requirements should be confirmed according to the EU TARIC database. If the equipment is second-hand, does the classification change? The classification does not change; it remains 902221, but it should be noted that second-hand equipment may involve additional requirements such as pre-shipment inspection and radioactivity testing. At declaration, it should be marked as "second-hand" and relevant certificates provided.