Chapter 85 covers electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles. This chapter has an extremely broad scope, encompassing everything from household appliances to industrial electronic equipment, but excludes machines and mechanical appliances of Section XVI. The core characteristic is that goods must operate by electrical energy or constitute electronic components. Heading 8540 belongs to the electronic components category within this chapter, specifically thermionic, cold cathode or photocathode valves and tubes. Heading 8540 covers thermionic, cold cathode or photocathode valves and tubes (including gas-filled and vacuum tubes, gas-filled mercury arc rectifier tubes and cathode-ray tubes, television camera tubes, etc.), but 8540 only includes electronic valve and tube type components and does not include semiconductor devices (such as diodes and transistors of 8541). Subheading 854040, as a subheading thereof, specifically refers to data/graphic display tubes, i.e., cathode-ray tubes used for displaying letters, numerals, symbols or graphics, commonly found in oscilloscopes, radar, medical monitors, etc. First 2 digits 85: Chapter 85, representing electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles. Digits 3-4, 40: Heading 8540, referring to thermionic, cold cathode or photocathode valves and tubes. Digits 5-6, 40: Subheading 854040, further subdivided under 8540, specifically referring to data/graphic display tubes, distinguished from television camera tubes (854020), television picture tubes (854011/854012) and other cathode-ray tubes. Therefore, the complete meaning of 854040 is: cathode-ray tubes used for displaying data or graphics. This commodity is a data/graphic display tube, which is a type of cathode-ray tube. Its working principle is based on an electron beam bombarding a fluorescent screen to display information, which conforms to the definition of 8540 'thermionic, cold cathode or photocathode valves and tubes.' It is not classified under 8541 (semiconductor devices) because it is not a solid-state device; it is not classified under 8531 (electric sound or visual signaling apparatus) because it is a component rather than a complete apparatus; nor is it classified under 8543 (electrical equipment not specified elsewhere in this chapter) because 8540 specifically lists it.

Product Name: The specific name of the declared commodity, such as 'data/graphic display tube' or 'cathode-ray tube' Use: Explain the application field of the display tube, such as 'for oscilloscopes' or 'for medical monitors' Working Principle: Briefly describe its electron beam scanning display principle, such as 'cathode-ray tube, electron beam bombards fluorescent screen' Brand: Fill in the manufacturer or brand name; if no brand, fill in 'no brand' Model: Fill in the specific model, such as 'D10-123' Screen Size: Diagonal length of the display tube screen, in inches or centimeters Color or Monochrome: Indicate 'color' or 'monochrome' Product Name: Data/graphic display tube; Use: For industrial oscilloscopes; Working Principle: Cathode-ray tube, electron beam scanning; Brand: Tektronix; Model: TDS-2024; Screen Size: 5 inches; Color or Monochrome: Monochrome. Confusing data/graphic display tubes with television picture tubes, leading to classification under 854011 or 854012 Failure to declare the working principle may result in incorrect classification under 8541 semiconductor devices Ignoring screen size and color/monochrome, affecting subheading subdivision False declaration of brand and model, affecting customs valuation and traceability

The core basis for classification is the function, working principle and use of the commodity. 854040 specifically refers to cathode-ray tubes used for displaying data or graphics, which must be based on the display principle of an electron beam bombarding a fluorescent screen, and are mainly used for non-television purposes such as oscilloscopes, radar, medical equipment, etc. If it is a television picture tube, it is classified under 854011 or 854012; if it is a camera tube, it is classified under 854020; if it is a semiconductor display device, it is classified under 8541 or 8531. Therefore, when determining, it is necessary to confirm whether it is a cathode-ray tube and whether it is used for data/graphic display. 854011 Color television picture tubes: 854011 is a picture tube specifically for color television receivers, while 854040 is a data/graphic display tube. Their uses differ: the former is for televisions, the latter for monitors, oscilloscopes, etc. 854020 Television camera tubes: 854020 is a camera tube, which converts optical signals into electrical signals; 854040 is a display tube, which converts electrical signals into optical signals, with the opposite function. 854060 Other cathode-ray tubes: 854060 covers other cathode-ray tubes not elsewhere specified, such as tubes for special instruments; 854040 specifically lists data/graphic display tubes, which should be classified under 854040 first. 853120 Liquid crystal display devices: 853120 is a liquid crystal display device, which is a solid-state display with a different working principle; 854040 is a cathode-ray tube, which is a vacuum electronic tube. 854140 Photosensitive semiconductor devices: 854140 is a semiconductor photosensitive device, such as a photodiode; 854040 is a cathode-ray tube, not a semiconductor device. Is it a cathode-ray tube? Is it used for displaying data or graphics? Is it used for television reception? Is it color? Does it have an electron beam scanning principle?

What are the main applications of data/graphic display tubes under HS code 854040? They are mainly used in equipment requiring the display of graphics or data, such as oscilloscopes, radar displays, medical monitors (e.g., electrocardiographs), industrial control monitors, etc. These display tubes are usually monochrome or single-color, with relatively high resolution, and differ significantly from television picture tubes in design and use. How to distinguish 854040 from 854011? 854040 is a data/graphic display tube, used for displaying data or graphics, such as in oscilloscopes; 854011 is a color television picture tube, used in television receivers. The key difference lies in the use: the former is for non-television purposes, the latter is specifically for televisions. If a display tube can be used for televisions, it is classified under 854011. What key information is required when declaring 854040? Product name, use, working principle, brand, model, screen size, color or monochrome, etc. are required. Among these, use and working principle are the most critical, used to confirm classification under 854040 rather than other subheadings. It is recommended to attach product specifications or technical parameters. If the display tube is color but used for industrial monitors, which code should it be classified under? If the color display tube is specifically used for industrial monitors to display data/graphics and is not for television purposes, it should still be classified under 854040. However, note that if the monitor can receive television signals, it may be regarded as a television picture tube and classified under 854011. It is recommended to judge based on actual function. Does 854040 include liquid crystal displays? No. 854040 only covers cathode-ray tubes (CRT); liquid crystal displays (LCD) should be classified under 853120. If it is an OLED display, it may be classified under 853120 or 8543. Therefore, accurate classification should be based on the display technology. For imported used data/graphic display tubes, is the HS code still 854040? Yes, the HS code does not change based on new or used condition and remains 854040. However, the import of used mechanical and electrical products must comply with relevant national regulations, may require pre-shipment inspection certificates, and some used mechanical and electrical products are prohibited from import. It is recommended to consult customs in advance. What is the export tax rebate rate for 854040? The export tax rebate rate is subject to adjustment according to national policies. It is recommended to check the latest 'Export Tax Rebate Rate Database' or consult the local tax bureau. It can usually be queried through the commodity code in the tax rebate system, or by referring to the tax rebate rate table published by the General Administration of Customs. If the display tube is used for medical equipment, are there special regulatory conditions? Display tubes used for medical equipment may involve medical device regulation and require a medical device registration certificate or filing. Relevant certificates must be provided upon import, and customs may release the goods based on certification from the drug regulatory authority. Specific regulatory conditions should be checked in the 'Customs Import and Export Tariff' under the regulatory document codes.