Shanghai Nickel Lock Warehouse does not need a deposit. According to the inquiry of relevant public information, Shanghai Nickel Lock Warehouse has no provisions on deposit and does not need deposit. Lock position refers to the investment term, which is usually used for spot trading, foreign exchange margin trading and futures margin trading. Lock positions generally refer to investors opening new positions that are opposite to the original positions after buying and selling contracts. It is also called lock positions, lock orders, and even euphemistically called Butterfly Qi Fei.