KeePer Technical Laboratory's (TYO:6036) total sales surged 51% year-on-year to 1.43 billion yen in May, according to a Wednesday filing on the Tokyo Stock Exchange.
Sales at 144 directly operated stores jumped 49% year-on-year, while sales at 132 existing stores increased by 43%, and net sales from franchise stores soared 136% year on year.
During the month, the total number of stores, including franchises, reached 178.