节点：中游（冶炼、中间品）位置：中游情绪：中性参考度：2/10
3月12日，上海期货交易所发布通知，调整黄金等期货合约的涨跌停板幅度及交易保证金比例，自相关合约上市时起生效。
黄金AU2704合约的涨跌停板幅度为17%，其中套保持仓交易保证金比例为18%，一般持仓为19%；白银AG2703合约的涨跌停板幅度为20%，套保持仓保证金比例21%，一般持仓22%。
镍NI2703、锡SN2703合约的涨跌停板幅度为12%，套保持仓保证金比例13%，一般持仓14%；天然橡胶RU2703合约的涨跌..
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