Consider the following Heckscher-Ohlin model: there are two countries, America and China, two goods, high-tech manufactures and low-tech manufactures, and two factors of production, skilled labor and unskilled labor. America is skilled-labor abundant and China is unskilled-labor abundant. High-tech manufactures are skilled-labor intensive and low-tech manufactures are unskilled-labor intensive. What happens to the price of high-tech manufactures relative to the price of low-tech manufactures in America following trade?