* 中国股市英伟达（Nvidia）NVDA.O相关概念股周二早盘走低，工业富联601138.SS、新易盛300502.SZ、天孚通信300394.SZ和中际旭创300308.SZ开盘跌幅介于3.2-5.9%。
* 英伟达周一收盘暴跌8.7%，年初迄今跌幅15%。
* 美国主要股指周一大幅收低，之前特朗普宣布开始对加拿大和墨西哥征收 25% 的关税，以及数据显示美国制造业略有下滑。
ISM调查公布后股市下滑，在特朗普表示对加拿大和墨西哥商品征收25%的关税将于周二生效，4月2日开始征收对等关税后，股市跌幅扩大。他说，这两个北美国家 "已经没有余地 "来避免关税。（完）
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(发稿 刘珞焱；审校 杨淑祯)
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