The underlined words are added by the reviewer. The 'at' is mine. I cannot speak to 'previously', but it is irrelevant to the 'to/for' problem.
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meltrgowever, the company had previously sold products only forI cannot speak to 'previously', but it is irrelevant to the 'to/for' problem.atthe retail market.The underlined words are added by the reviewer. The 'at' is mine.