The trust mark ECOCREST © can be given to single products or materials and those could also derive from more complex projects. The trust mark ECOCREST © is based on the adoption of a general specification document which includes the basic rules. Each single product or material must ensure at least the adoption of the basic rules to obtain the mark ECOCREST © and further rules could be agreed, concerning other environmental aspects or fair trade agreements. The Specifications document must be integrated with a Licence Agreement which is different for each product or material. Both documents will become parts of the same contract.