The pulp making process is aimed to prepare the pulp fiber for paper machine. The raw material mainly have two type, one is virgin pulp (made from wood chips)  and OCC ( made from all kinds of waste paper. The pulp making process is mainly have 4 parts, firstly is pulping process will use hydraupulper, trommel screen, impurity separator,etc. Secondly is purification process will use high/low consistency cleaner, fiber separator, etc. Thirdly is screening process will use pressure screen, vibrating screen,reject separator,etc. Fourth is thickening process will use gravity disc thickener and multi disc filter.