Bessey is a family-owned company founded in Germany in 1889. They make a variety of clamps - various styles and qualities. Some are aimed at DIY users and sold in big box stores - but they also make industrial grade clamps - priced accordingly. Over the years I’ve bought hundreds of their clamps for both business and personal use - and have been pleased with many (not all of them). Some of these were produced in the USA, others in Germany - and more recently lots of what they sell are made in China. they had the patents on the first parallel jaw clamps. I still use my original ones (have 36 in different lengths) - and recent reviews in woodworking magazines give their newer models top grades. Later this year they will be introducing what they claim to be an improved design REVO parallel jaw clamp to address feedback they’ve gotten from users.
I have a number of their CDS, TG series, J-series (stepover), one-handed edge and solid-surface seaming clamps that I really like.
I’ve never tried their EZS quick clamps - they get some mixed reviews on Amazon - but Wood Magazine liked them:
and there is a “review” on YouTube
The also sell a different style quick clamp that looks light-duty: