Doing business in China is one thing and being based in China is another. Stock investors sent that message as the mainland government clamped down on local companies listed in U.S. markets. It’s reflected in a Goldman Sachs gauge of companies in the Russell 1000 Index with the highest percentage of sales in the Asian nation. The China Sales Exposure index climbed 49% in the 12 months ended Tuesday, beating a 37% advance in the Russell 1000.