大全新能源（DQ）今日夜盘交易中股价大涨6.63%，引发市场广泛关注。此次涨幅背后有多重利好因素支撑。
首先，公司在技术创新方面取得新进展。大全新能源今日公布了一项名为"多晶硅还原炉余热梯级利用系统"的新专利。该系统通过多级闪蒸罐和输送泵实现冷却水余热的梯级利用，有望显著优化余热利用率并提升能源转化效率，这对于提高公司的生产效率和降低成本具有积极意义。
其次，华尔街投行给予公司积极评级。花旗银行首次给予大全新能源"买入"评级，并看好公司未来发展前景。花旗认为，随着太阳能行业供应侧改革的推进，包括从保护性关税转向市场化关税、潜在的政府协助产能收购等措施，可能会惠及大型多晶硅企业。这些因素可能引发市场对太阳能行业的重新评价，大全新能源作为行业龙头之一有望受益。此外，在所有9家参与评级的机构中，56%的券商给予买入建议，44%的券商给予持有建议，无券商给予卖出建议，显示机构普遍看好该股。
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