You need to find a hemp product manufacturer with all the necessary certifications. You also need to familiarize yourself with the hemp manufacturing process and all the other intrinsic details related to it, such as the place of origin of the hemp plant and the way it was grown. While some manufacturers use indigenously grown hemp, others prefer to import it from places such as Europe, China, and North America as it can be less tedious in many cases. Ideally, hemp should be a non-GMO, organically grown crop to ascertain the superior quality of CBD oil. In the case of CBD, it is not only the retailers and the distributors who need to comply with regulations. Producers and farmers, too, are bound by regulatory constraints. Therefore, having an in-depth knowledge of the entire supply chain becomes mandatory. The extraction method being used by the manufacturer is equally important. Opting for a GMP-certified manufacturer is an added benefit. The most important thing, however, is the presence of THC in the final product and its concentration. As per the present regulations, only products that contain a 0.3% or lower concentration of THC can be sold legally.