Overview: With the vigorous development of China's geological industry in the harsh operating environment in the wild plain paper often because they can not get soaked by rain water and illegible illegible, by the United States in Washington JCD company produced waterproof notebook mainly supply the US military and Professional outdoor workers to use. With the vigorous development of China's geological industry in the harsh operating environment in the wild plain paper often because they can not get soaked by rain water and illegible illegible, by the United States in Washington JCD company produced waterproof notebook mainly supply the US military and professional outdoor Workers use. The notebook is very excellent waterproof performance, can be used in all weather environments, even encounter heavy rain, notebooks are all soaked in water, JCD produced the notebook will not become faded or damaged, you can make sure that the record is not a shred will be lost due to the weather. The product can use any kind of writing pen, pen, oil pen, pen like writing. Product specifications l Size: 117mm * 107mm l Binding: Digital page inside with plastic l: 30 张