In my opinion, the key strength of Nissan Securities is its regulation by the FSA, which provides a high level of trust and security for traders. The range of trading instruments, including commodities, FX, and derivatives, is a significant advantage. However, the lack of transparency around deposit and withdrawal methods, as well as the absence of customer support details, are notable downsides. If you're considering using their platform for OTC trading, I recommend getting clarification on payment options and trading conditions before proceeding with your OTC account login.