The 27-year-old winger signed a two-year deal, with the option of an extra season, with the Baggies on deadline day and manager Pulis is keen to see him recreate the form he showed with Wales at Euro2016.
"Everybody enjoyed watching Hal's contribution to the Welsh performances at the Euros and we're pleased to have him on board," Pulis told Albion's official website.
Robson-Kanu joined Albion as a free agent following the expiration of his contract with Reading at the end of last season.
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