As regards order terms, deliveries are mainly made on a monthly basis or more often for the containers of the majority of products. Deliveries are normally affected by the time specified by the packager/bottler, this company also being the one that determines the amounts of each order for all types of containers. What is more, all the containers are nearly always transported on reusable pallets (in more than 70% of cases), since environmental protection is a demand made of the manufacturers of all types of containers in a large number of cases (37.6% in Spain and 45.5% in Belgium). Despite this fact, being in possession of the ISO 14000 certificate is not a determining factor in the choice of glass container manufacturer.