Need mungbean seeds

[chingmai331]

You know the sprouts, the 1cm long tiny white seedlings found in many Thai dishes, and often on give-away plates near the cabbage leaves.  Since there are so many eaten here in CM there must be one or many sprout growers who soak the seeds each day, rinse off the outer hull, keep in the dark and after 4 days presto, food for you and i.

But where can i buy the seeds in bulk?  Like a few kilos.