There are, owing perhaps to the proximity of Lima, few industrial establishments in the city; among them are a large sugar refinery, some flour-mills, a brewery, a factory for making effervescent drinks, and a number of foundries and repair shops.
A refinery was attached to the London Mint from 1816 to 1851, but was then let on lease and left to private enterprise.
A modern sugar-mill and refinery at Sincerin, 28 m.
The mud from the Ysel furnishes the material for large brick-works and potteries; there are also a celebrated manufactory of stearine candles, a yarn factory, an oil refinery and cigar factories.
There is one large refinery at Villa del Mar, however, which imports raw cane sugar from Peru for refining.