From the Spanish, by selling them stuff. That was the purpose of mercentalism, to accumulate silver that could be used to finance entry into the carrying trade among the wealthier nations of South and East Asian.

The Governor and Company of Merchants of London Trading in the East Indies was established around 1600, but with the much greater success of the United East India Company of the Netherlands in the East Indies trade, they became more focused in carrying trade in India and China.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.