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If you are planning to purchase a large quantity of ANYTHING do your due diligence. Talk with them over the phone (more than once most likely), ask them for video evidence of the products you are wanting to buy, or better yet, go visit them. Stay safe of course, but if you can drive to meet each other, DO IT.
The hemp space is still very young and most people do not have their supply chains in place so meeting and getting to know one another is still best.