What do you mean by unilateral and bilateral social security?

Inquiring about official website, both unilateral and bilateral transactions are a way to collect fees. Single-sided words mean opening positions, and variable words mean opening and closing positions. Many domestic investment products only need to charge a unilateral handling fee, but the trading of options needs to charge a bilateral margin. Specific information focuses on official website, and live geese have first-hand authoritative information.