Regulation of lead-free materials Effective management of raw materials is crucial for environmentally friendly PCB manufacturing. A mistake such as mixing lead-tin solder wire with a pure tin bath can have severe consequences. Indirect materials, like solder flux residue, also require careful control. To ensure green production, PCB manufacturers can establish coding rules for halogen-free and lead-free materials, use color labeling for packaging, separate environment-friendly materials in storage, and assign specialized staff for material routing. Additionally, a "green production qualified supplier" certification can be implemented. Other methods may vary depending on each manufacturer's standard operating procedures (SOP).
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