Celbi S.A | 15,139 followers on LinkedIn. An ALTRI company since 2006, Celbi produces a high quality short fibre pulp from eucalyptus globulus. The properties of the fibres of this species give Celbi’s pulp special characteristics that make it particularly suitable for very specific types of paper and cardboard. The brand Celbi PP is recognised by the market for its top quality, particularly in what concerns low level of dirt, bleaching and consistency of its physical, chemical and paper properties and characteristics.