Shares in Me Group International PLC (LSE:MEGP) rose 4.2% to 147.8p after agreeing a deal to install its laundry machines at Asda supermarkets and petrol forecourts around the UK.
The specialist in what it calls automated instant-service equipment said it aimed to deploy up to 700 of its Wash.ME machines as part of a "partnership" with the Leeds-based grocery group.
It said the sites are "attractive, high-footfall locations which can be easily accessed and maintained" by its network of field engineers, adding to more than 7,600 machines across 12 countries currently.
Deputy CEO Vladimir Crasneanscki said: "ASDA is a perfect company to partner with, their retail and petrol stations are excellent locations for our services and their innovative and fast-paced approach will enable us to deploy our units rapidly.
"We are delighted to announce this partnership; this is the largest single client deal in the history of our laundry division and demonstrates the growing demand for our services."
Asda's Joseph Sutton said the rollout of Wash.ME units "give customers a quick, convenient and great‑value way to tackle their laundry while they shop".