Mysteel数据：佛山不锈钢期现货基差对比2024-8-9佛山地区交割品级不锈钢现货价格（304/2B2.0卷价）上期所SS主力合约日期宏旺投资福建甬金江苏德龙北港新材2024-8-514170144201407014070140652024-8-614120143701402014020139002024-8-7140701432013970139701