for this u may go for market & purchase for size taken, if u r talking about share market u may check any anchor, havells or any other company websites for its share, i thing u r interested in MODULAR SWITCH factory, then u may go for books with latest eddition in ur nearby areas
A2) In the UK it is possible to visit an institution called Companies House, and look up the annual figures for any corporation.
A1) The market size is the above figures all added up.
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