We have supplied E-scooter Assembly Lines for more than 32 years. 

The electric scooter (E scooter) assembly line is a critical component in the production of electric scooters, involving a series of structures, assembly, testing processes, and production line characteristics. Here are the main features of an electric scooter assembly line based on the search results:

1. **Structure**:
   - Frame: Includes the chassis, handlebars, saddle, fork, pedals, etc., forming the basic shape and support of the electric scooter.
   - Electric Drive Device (Motor): Usually divided into brushless motors and brushed motors, with hub drive mode being more common in domestic electric vehicles.
   - Battery: Mainly uses lead-acid batteries and lithium batteries, with lithium batteries gradually becoming the mainstream due to their high energy density and long life.
   - Charger: The design usually includes automatic conversion of constant current, constant voltage, and float charge stages to protect the battery and extend its life.
   - Control System: Includes controller and sensor assembly, brake assembly, lighting assembly, anti-theft alarm assembly, and display assembly, etc.

2. **Assembly and Testing Processes**:
   - Controller Wiring: The controller is the core of the electric scooter, and wiring steps include connecting motor lines, power lines, key lock lines, learning lines, Hall lines, and throttle lines, etc.
   - Motor Testing: Check whether the motor lines are connected properly and ensure the motor rotates without resistance.
   - Battery Testing: Test the charging and discharging performance of the battery to ensure it is healthy and meets safety standards.
   - Complete Vehicle Assembly: Assemble the various parts into a complete vehicle according to the process flow and make necessary adjustments.
   - Performance Testing: Including testing of performance indicators such as maximum speed, range, and climbing ability.

3. **Production Line**:
   - Automated Assembly Line: A highly automated production line, integrating precision machinery, pneumatic technology, computer control, etc.
   - Quality Control: Multiple quality checkpoints are set up on the production line to ensure that each electric scooter meets the factory standards before leaving the line.
   - Data Monitoring: Real-time monitoring of production data for quality control and production efficiency optimization.
   - Customization Service: Some enterprises can design and manufacture electric scooters according to customer needs.

These features reflect the manufacturing standards and processes of the two-wheeled electric scooter industry, aiming to ensure the high quality and performance of the products while meeting the diverse needs of the market and consumers.