I. Material Parameters:

1. Display Shell: Integrated aluminum alloy CNC die-casting (surface treatment: sandblasting anodizing), ultra-thin arched design; Elevator Panel: One-time aluminum alloy die-casting with a thickness of 5mm

Section II: Transmission Mechanism and Overall Structure

1. Equipped with dual tracks on both sides and a central chain design, offering enhanced stability, no oil stains, and noise levels under 20 decibels.

2. The display case is seamlessly connected to the ultra-thin round shaft lifter, with no exposed connection wires, back panel, or screws, ensuring the overall elegance and aesthetics of the lifter.

3. The panel control buttons not only allow for normal operation of the machine's up, down, tilt forward, and tilt backward, but also can switch to the function buttons to adjust various parameters of the display, such as brightness and color, etc.

4. The LCD lift-and-fold panel is pre-installed with a USB port and an electric main power switch button. The USB port is connected to the USB port on the back of the device.

5. Supports simultaneous high-definition HDMI and VGA inputs, with panel buttons featuring HDMI/VGA switching functionality.

6. The display screen features a renowned domestic brand - BOE, A-grade screen. No dead pixels, no bright spots. The display is safe and reliable. The screen is made with dust-proof and fingerprint-resistant glass.

III. Basic Product Parameters:

Motor Power: 50W, Screen Ratio: 16:9, Backlight/Contrast/Brightness: LED, 800:1, 220V, Resolution: ≥1920*1080 dpi, Basic Interfaces: VGA*1, HDMI*1, COM*2, USB*2, Switch*1, Frequency Response: 50Hz-17000Hz, Sensitivity: -45±2dB @ 1KHz, Power Supply: AC 220V 50/60Hz, Installation: Desktop Embedded, Operating Temperature: -5～45℃, Operating Humidity: 10%～95%  Four, the same parameters are as follows:

Embedded installation / Features new CNC design / Equipped with microphone, talk button, and indicator light, controls/indicates unit status / Unidirectional, with anti-gas explosion sound function, includes wind protection cover / Chairman's priority control button, can activate system alert sound to remind attendees / Can set termination or pause to end all speakers' microphone status / Unlimited number of chairman units in the system, can be placed at any position in the loop / Chairman units in the system are not subject to restriction functions / Rotatable condenser microphone boom with talk indicator halo / High sensitivity microphone / Units powered by system host, input voltage 18V within safe range / Automatic shutdown function, microphones automatically turn off after 45 seconds if no sound is detected (sound below 50dB within detection range) / Units use 8-core "T" type connection / Features automatic video tracking function / Includes one microphone unit connection cable