第一太阳能一季度净销售8亿美元，分析师预期8.411亿美元。

Group 1 - The core point of the article is that First Solar's net sales for the first quarter reached $800 million, which fell short of analysts' expectations of $841.1 million [1] Group 2 - The company reported a significant revenue figure of $800 million for the first quarter [1] - Analysts had projected higher sales, estimating $841.1 million for the same period [1]