Refers to an individual or a sole proprietor who is a citizen of the Philippines or a partnership, corporation, cooperative, or association duly organized under the laws of the Philippines and of which at least seventy five percent (75%) of the interest or outstanding capital stock belongs to citizens of the Philippines, habitually established in business and habitually engaged in the manufacture or sale of the merchandise covered by his bid, and the business has been in existence for at least five (5) consecutive years prior to the advertisement and/or posting of the Invitation to Bid.