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It has two types: gray-bottom white paper and white-bottom white paper. Gray-bottomed white board paper is a liner board made by a cylinder paper machine. Its main components are waste paper pulp and bleached chemical pulp. In papermaking, waste paper pulp is generally used as the bottom layer and bleached chemical pulp is used as the surface layer. Because only one side has a white surface layer, and the other side is made of waste paper pulp, which is mostly gray in color, it is commonly called gray-bottomed white paper in business. Read More
It is a board made of liner paper and corrugated corrugated paper formed by processing corrugated sticks. It is generally divided into two types of single corrugated cardboard and double corrugated cardboard. According to the size of the corrugation, it is divided into: A, B, C, Five types of E and F. Read More
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