Quick view Add to Wishlist U.S. Solid U.S. Solid Copper Welding Paste Flux 40g Spot welding machine copper to copper flux, resistance flux, can be used for lithium battery copper electrode spot welding and other copper products welding. A paste copper flux composed of superfine copper-phospho-tin-nickel alloy powder, flux and... MSRP: $28.99 Add to Cart The item has been added Compare