What could be possible reason for sudden increase in foreign expenditure?

IN Pondy oxide and chemical
their is sudden increase in foreign expenditure

What could be the possible reason for sudden increases from 0.18 in 2013 to 631.23 in 2017

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In Pondy oxide and chemical there is a sudden increase in foreign expenditure

Possibly they were forced to (or chose to) use a foreign company
to obtain any of their raw materials or for any of the services they require.

In this case, whether it is good news or bad,
would presumably depend on whether they got a better deal
compared to their previous local suppliers/service-providers.