Chapter 90 covers optical, photographic, cinematographic, measuring, checking, medical or surgical instruments and apparatus; precision instruments and apparatus; parts and accessories thereof. This chapter is divided into multiple headings, including optical elements, measuring instruments, medical equipment, industrial process control equipment, etc. Goods under this chapter are generally characterized by high precision and high technology content, and are used in professional fields. Heading 9033 covers parts and accessories of machines, appliances, instruments and apparatus not specified or included elsewhere in Chapter 90. This is a residual heading used to classify parts and accessories that are solely or principally for use with equipment of Chapter 90, but do not themselves constitute complete equipment and are not specifically named in other headings. First 2 digits 90: indicates Chapter 90, covering optical, measuring, medical and other instruments and apparatus. Digits 3-4, 33: indicates heading 9033, i.e., parts and accessories not specified or included elsewhere in Chapter 90. Digits 5-6, 00: since there is no further subdivision under this heading, the subheading is 00. The overall code 903300 represents the specific subheading for vehicle-mounted instrument accessories, applicable to parts and accessories solely for use with instruments or apparatus used on vehicles, provided they are not named in other headings. If vehicle-mounted instrument accessories are solely for use with instruments and apparatus on vehicles (such as vehicle-mounted navigation, sensors, etc.) and are not parts specifically named in other headings, they are classified under 9033. For example, dedicated brackets for vehicle-mounted radar, dedicated housings for vehicle-mounted cameras, etc. However, if the accessory itself is a general-purpose part (such as screws), it should be classified according to its material; if it is a part named in another heading (such as parts of lighting devices under 8512), it should be classified under the corresponding heading.

Product name: The specific name of the declared commodity, which should accurately reflect the use and function of the accessory, such as "vehicle-mounted camera bracket," "vehicle-mounted radar sensor housing," etc. Use: Explain which vehicle-mounted instrument or apparatus the accessory is solely for, such as "for vehicle-mounted navigation system," "for vehicle-mounted radar," etc. Material: Declare the main material of the accessory, such as plastic, metal, glass, etc. Material affects classification. Brand: Declare the brand of the accessory (if any); if there is no brand, fill in "no brand." Model: Declare the model or part number of the accessory for easy identification. Is it dedicated: Declare whether the accessory is solely or principally for use with vehicle-mounted instruments and apparatus. Applicable vehicle model: If applicable, declare the vehicle type or brand for which the accessory is suitable. Customs declaration example: Product name: Vehicle-mounted camera bracket Use: Solely for fixing vehicle-mounted camera Material: Aluminum alloy Brand: No brand Model: CAM-001 Is it dedicated: Yes Applicable vehicle model: Universal Remarks: This bracket is a dedicated accessory for vehicle-mounted cameras and is not suitable for other equipment. Misdeclaring general-purpose parts as vehicle-mounted instrument accessories, leading to classification errors. Failing to provide proof of dedicated use, resulting in customs questioning the classification. Inaccurate material declaration, such as declaring plastic as metal, affecting classification.

The core basis for classification is: whether the accessory is solely or principally for use with vehicle-mounted instruments and apparatus of Chapter 90 and is not specifically named in other headings. If the accessory itself constitutes complete equipment, it should be classified under the corresponding complete-machine heading; if it is a general-purpose part, it should be classified according to its material; if it is a part named in another heading, it should be classified under that heading. 8708 Parts and accessories of motor vehicles: 8708 covers general-purpose motor vehicle parts, such as bumpers, brakes, etc., while 9033 is solely for parts of vehicle-mounted instruments and apparatus and does not apply to general mechanical parts. 8512 Lighting or signaling devices: 8512 covers vehicle lighting and signaling devices and parts thereof. If the vehicle-mounted instrument accessory is a part of a lighting device, it should be classified under 8512 rather than 9033. 8529 Parts of radio navigational equipment: 8529 is solely for parts of radar, radio navigational and similar equipment. If the vehicle-mounted instrument belongs to such equipment, its parts should be classified under 8529. 9029 Revolution counters, odometers, etc.: 9029 covers vehicle instruments such as speedometers and odometers, and their dedicated parts are classified under 9029, not 9033. Is the accessory solely for vehicle-mounted instruments? Is it specifically named in other headings? Does the accessory constitute complete equipment? Does the material affect classification? Is it a general-purpose part?

Vehicle-mounted instrument accessories are classified under 903300, but my product is a vehicle-mounted navigation screen. Where should it be classified? If the vehicle-mounted navigation screen constitutes complete navigation equipment, it should be classified under headings such as 8527 or 8528; if it is only a screen part and is solely for navigation equipment, it may be classified under 8529. 903300 applies to parts not elsewhere specified, so it is first necessary to determine whether it is named in another heading. How do you determine whether a vehicle-mounted accessory is solely for an instrument? Dedicated use is usually based on design, use and sales channels. If the accessory can only be used for a specific instrument and has no other use, it may be regarded as dedicated. Product manuals, technical materials and other evidence must be provided. If the material of a 903300 accessory is plastic, does it affect classification? The material itself does not determine classification, but if the plastic accessory is a general-purpose item, it may be classified under Chapter 39 as a plastic product. Only plastic accessories solely for vehicle-mounted instruments are classified under 9033. Should a vehicle-mounted camera bracket be classified under 903300? If the bracket is solely for a vehicle-mounted camera and the camera belongs to Chapter 90 equipment (such as 8525), the bracket may be classified under 9033. However, if the camera itself is classified under 8525, its dedicated parts may also be classified under 8529, and the heading names must be checked. How do you distinguish 903300 from 8708? 8708 applies to general-purpose motor vehicle parts, such as body and chassis parts. 9033 applies to dedicated parts of instruments and apparatus of Chapter 90. If an accessory can be used both for instruments and for other vehicle components, it is generally not regarded as dedicated and should be classified under 8708. What materials are required when declaring 903300? Usually product manuals, drawings, use descriptions, material certificates, etc. are required to prove dedicated use and the reasonableness of classification. Customs may require samples or test reports. If a vehicle-mounted instrument accessory is an assembly containing multiple parts, how should it be classified? If the assembly constitutes a complete instrument, classify it as a complete machine; if it is a combination of parts and is solely for an instrument, it may be classified as a whole under 9033. However, if each part can be classified separately, they must be declared separately. What is the export tax rebate rate for 903300? The export tax rebate rate changes with policy adjustments. Please consult the latest customs tariff or tax authorities. Generally, it can be checked by HS code on the General Administration of Customs website or in the tax rebate system.