(15mm+PVB film+15mm) Stair Tread Glass with CE and ISO9001 1. Unbreakable Glass Sheet 2. 20 years' experience ( ... 15mm+PVB film+15mm) Stair Tread Glass with CE and ISO9001 1. Unbreakable Glass Sheet 2. 20 years' experience ... , 15mm, 19mm etc. Color euro brzone,golden bronze,dark green,f green(light green),dark blue(jewel blue),ford blue,lake ...