Tianyi Metal Inc. processes Nickel-Tin scrap to recycle it into Ni-Si-Fe alloy and tin ingot. We buy the raw material - nickel-tin scrap from world-wide sources about 50-100mt per month. The physical appearance is pellet (with a diameter about 3mm) or powder. The contents of Ni and Sn are at least over 15% respectively. Back to franktianyi at sina dot com if you have the source.