Shirley Technologies Limited Trading as BTTG
West Yorkshire, GB
ISO 12947-1,3 &-4: 1998 BS EN ISO 12947-2:2016 Sorensen Test Methods and performance classification BS EN 14325:2018 Dimensional stability (immersion in water) BS 4736:1985(1996) BS 6F 100:1998, Section 3.6 Sorensen