I was looking for a Chinese supplier of scrap copper and aluminium and found this suppliers and started to negotiate. After they sent me photos and proforma invoice, I went to China, Tianjin to visit their warehouse and check the goods. I paid 40% advance.
Thereafter I made the full payment, after that they sent me the original Bill of Landing. A few days later, I called the shipping line to check the cargo, and it turns out that they have another BL with a different description on it!