what is 两头在外 ？

同学你好，两头在外是一种生产模式，就是指把生产经营过的两头（原材料和销售市场）放在国际市场。

They import the raw materials from abroad, produce the product in their own country, and then sell it abroad.

In other words, they import machinery, spares, and natural resources from overseas and sell their produced items globally.