Main alloy composition and use application: Sn30ZnRE:For soldering of aluminium component Sn5SbRE:For soldering under higher temperature situation Sn0.7CuRE:For soldering of general electron products, and wave-soldering. Sn3CuRE:For soldering of fuse pipe parts etc. Sn0.3Ag0.7CuCe:For soldering of precision apparatus, speical request situtation, and wave-soldering. Sn3.0Ag0.5CuCe:For soldering of precision apparatus, speical request situtation, and wave-soldering. Sn3.5AgRE:For soldering of precision apparatus, speical request situtation, and wave-soldering. Sn3.5Ag0.5CuCe:For soldering of circumfluence soldering etc. Package: Size: 36.5x15.0x8.0 CM Weight: 25 KG Size: 37.5x18.0x6.8 CM Weight: 25 KG Size: 34.0X19.7X7.0 CM Weight: 20KG 2 years guarantee