Hi,
New double-glazing, and I'm trying to decypher the legend painted on
each pane
of glass.
At each corner there is
Darbytuf
Tempered
BS6206A
KM2070B (the letter B could be a 3)

Now I can make an intelligent guess at the first three lines, but what
is the
last line for?

Anyone help?

Thanks in advance

Mungo