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2. Electronic System Integration
These units are designed to operate at a stable ~5A current, calibrated to match the voltage requirements of the BYD Song’s factory lighting module. This objective power draw is intended to maintain compatibility with the vehicle’s diagnostic system, preventing error triggers during standard operation.

3. Beam Geometry and Light Distribution
The light source positioning is calibrated to match the focal length of the BYD Song's reflective bowl. This design achieves the following:

Low Beam: Maintains the factory cut-off line, directing light to the road surface while limiting upward stray light.

High Beam: Utilizes a concentrated emitter position to achieve the intended reach, increasing forward visibility in accordance with standard driving practices.

4. Adaptive Visibility Settings
Available in two color temperature configurations to suit different environmental conditions:

3200K Configuration: Optimized for lower color temperature output, which may provide improved visibility in high-moisture or low-contrast environments.

6000K Configuration: Provides a higher Kelvin output for improved road definition on well-lit or clear roadways.

5. Installation Design
The bulb base dimensions have been minimized to fit within the physical constraints of the BYD Song's headlight access port. This allows for manual installation without the requirement for bumper removal or the use of specialized tools, enabling a direct replacement of factory components.

Service Policy and Warranty Terms
1. Warranty Coverage
Each unit is covered by a 12-month limited warranty against manufacturing defects under normal operating conditions. In the event of a documented functional failure, we provide a replacement unit upon verification of the defect. This policy excludes damages resulting from improper installation, modification, or external environmental impact.

2. Return and Exchange Protocol
Products in original, unused condition may be returned or exchanged within 30 days of the delivery date. Items must be returned in their original packaging to be eligible for processing. Our return procedure follows standard commercial fair-trade practices to ensure accurate order resolution.

3. Technical Assistance
We provide technical support regarding product installation and model compatibility for the BYD Song series.

Pre-Purchase Verification: We encourage customers to confirm their vehicle’s trim and production year prior to ordering to ensure component compatibility.

Installation Support: Technical guidance is available via our contact channels to assist in resolving installation-related inquiries.

Operating Hours: Support is provided during standard business hours.

4. Wholesale and Distribution
We maintain a consistent supply chain for bulk distributors and workshop partners. We offer customized service agreements and prioritized logistics support for established cooperative business accounts. For bulk inquiries and partnership terms, please contact our administrative team directly.