Ultra International Limited supplies Naturals/Synthetics Reconstitutions. Ultra International Limited is an ISO 9001:2000 and ISO 14001 certified company. Naturals/Synthetics Reconstitutions are the most reliable olfactory reproductions of natural product. They do not contain neither the product they substitute nor their derivatives or by-products. These Naturals/Synthetics Reconstitutions come at reasonable rates, have good availability, and are of high quality.