If you need lead-free solder wire, please check the following link:
50g Lead Free Solder Wire：https://www.aliexpress.com/store/product/50g-Lead-free-Solder-Wire-0-5-1-0mm-Unleaded-Lead-Free-Rosin-Core-for-Electrical/3998021_33028980918.html?spm=211++++4.12010615.8148356.5.155b1cfadMCVRz
100g Lead Free Solder Wire：https://www.aliexpress.com/store/product/100g-Lead-free-Solder-Wire-0-5-1-0mm-Unleaded-Lead-Free-Rosin-Core-for-Electrical/3998021_33031202484.html?spm++++=2114.12010615.8148356.3.43f41cfax0FdRT
250g Lead Free Solder Wire:https://www.aliexpress.com/store/product/250g-Lead-Free-Solder-Wire-0-5-2-0mm-Unleaded-Lead-Free-Rosin-Core-for-Electrical/3998021_33028745755.html?spm=2114++++.12010615.8148356.1.43f41cfajLeNf0
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