(a) Manufacturers, vendors, and designated representatives. The requirements in this part apply to all manufacturers and vendors, and their designated representatives, who wish to participate in the USDA voluntary labeling program for biobased products. Manufacturers and vendors wishing to participate in the voluntary labeling program are required to obtain and maintain product certification.

(b) Other entities. The requirements in this part apply to other entities who wish to use the certification mark in promoting the sales or the public awareness of certified biobased products.