In the late 1990s, Silca acquired several companies specialised in the production of key machinery and security products (Bollini s.r.l., GBZ, Elzett) and in 1997 it merged with the Canadian key manufacturer Unican Group.
At its sale (to Kaba Group), the company had over $800 million in sales annually and was the largest maker of key blanks and key copying machines in the world.
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In December 2000, Unican Security Systems was bought out by the Kaba Group of Switzerland for $36.00 a share based on 18 124 000 shares outstanding.
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