[购买账户授权](%E8%B4%AD%E4%B9%B0%E8%B4%A6%E6%88%B7%E6%8E%88%E6%9D%83.md) [购买信号](%E8%B4%AD%E4%B9%B0%E4%BF%A1%E5%8F%B7.md) [账单明细](%E8%B4%A6%E5%8D%95%E6%98%8E%E7%BB%86.md)