1. Both acetylcholinesterase and butyrylcholinesterase reagents can be used, meeting the requirements of national standards and Ministry of Agriculture standards.  

2. The instrument automatically determines sample results, making the detection results more intuitive.  

3. The instrument features a menu library with over 100 vegetable names, categorized for management. Vegetable names can be added or removed as needed, edited, and directly printed.  

4. Multiple samples can be tested simultaneously, with cyclic detection. Samples can be tested immediately upon placement, and each sample is processed independently by the program, ensuring no interference between samples.  

5. The intelligent operating system features a more user-friendly interface. The main controller uses a multi-core processor with a clock speed of 1.88 GHz, ensuring faster operation and greater stability. 

6. Display method: 7-inch high-sensitivity true-color touchscreen display with a user-friendly Chinese interface, providing intuitive and simple readings.  

7. The printer uses a serial port 5V connection, supporting manual or automatic printing. Results are printed within three minutes, with the format including the tester's name, absorbance difference, testing time, testing institution, sample name, and result determination. 

8. The light source uses imported ultra-high-brightness LEDs, featuring low power consumption, high precision, strong stability, controllable light sources (unused light sources can be turned off), and fast response speed.  

9. Intelligent constant current voltage regulation, automatic light intensity calibration, and no temperature drift of the light source during prolonged continuous operation.

10. The instrument has GPRS remote transmission functionality, allowing a SIM card to be inserted for data transmission to a remote platform. It also supports Wi-Fi networking, enabling rapid data upload to a computer for data management and statistics.  

11. The instrument features a USB 2.0 interface design for convenient data storage and transfer, and can be directly connected to a computer at any time. It can also be controlled by a computer to perform data querying, browsing, analysis, statistics, and printing.  

12. Highly intelligent, the instrument has self-testing functions: it performs power-on self-testing and zero calibration, and has automatic repeatability detection functionality.  

13. The instrument has self-protection functionality, allowing the setting of usernames and passwords to prevent unauthorized personnel from operating it.  

14. It uses DC 12V power supply for higher safety standards and is equipped with a 6A lithium-ion battery charger.  

15. The instrument has functions for re-calibration, locking, and restoring factory settings.