First, check whether the product packaging indicates the hygiene license number, whether it is printed with the factory name, address and whether there are any implementation standards. 

Second, observe the color of the paper. Pure wood pulp paper, as it contains no additives, should have a natural ivory white color and relatively uniform texture. 

Third, look at the price. Generally, toilet paper with a market retail price that is too low is unlikely to contain pure wood pulp. 

Fourth, look at the endurance strength. Pure wood pulp paper, due to its long fibers, has high tensile strength, good toughness and is not easy to break. However, poor-quality paper will have irregular small holes and powder shedding.