Hi and welcome :sun:
Is it actually spelled 'Kablo Vrchlabi' ? (with an 'L' in the last word?)
There's a small mention of that name on Google. It appears to be a business. I'm not sure it's particularly associated with glass manufacture as there's no mention of it anywhere on this board - I used our Search facility.
What we need is a nice photo. Can you please upload one for us to see? We love seeing new bits of glass. :thup: