Cheap And Discounts MECHANIC Solder Paste Flux XG-50 XG-Z40 Soldering Tin Sn63/Pb67 for Soldering Iron Circuit Board SMT SMD Repair Weldind Fluxes Wholesale. Buy Directly From Merchant DIYPHONE Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.