As the first stage of paper pulp molding process, choosing good quality waste paper is so important. Generally, you can get the waste paper from the local recycling company, individuals and paper mill factory. We mainly use the newspaper, package leftover, paper cardboard etc to make egg trays. Better paper fiber quality will make the trays smoother, if the waste paper are colored, final trays will not be white in some degree. Because the recycled paper is a mixture of varieties, to make good paper trays, we need to remove substance such as metal pellets, ropes, plastic, wood chips or PE flakes in the mixtures.