EQT AB raised its takeover offer for Intertek Group Plc as the private equity firm seeks to overcome repeated rejections from the UK product testing business.

EQT’s latest proposal includes £60 ($81) a share in cash, a 59% premium to Intertek’s price on April 9, the day before its initial offer, the company said Tuesday in a statement. EQT will also include the 107.7 pence final dividend announced by Intertek in March.