Dear Bussarakm,
Please note UL94HB means that the profile 209-0201 complies with the requirements, which requires this standard.
I don’t know which application for will you customer will use this rubber.
Please note you or your customer can find the definition for UL94HB in internet. Please see this link, may be it helpsJ
http://www.ulttc.com/en/solutions/test-methods/combustion-fire/flammability-ul-94-hb.html
We get from our supplier only the information that this rubber complies to UL94HB.