On February 22, 2021, the China Tourism Research Institute released the theme report of "from comprehensive recovery to high-quality development": the tourism industry resumed production under the impact of the COVID-19 epidemic, and the overall economy rebounded in a "U-shaped" trend. At the same time, mass tourism
In order to further promote the exchange and cooperation between enterprises and institutions in China's environmental sanitation industry in the new era, comprehensively display advanced concepts, technologies, equipment and solutions in the field of sanitation, further promote the healthy development of China's environmental sanitation, and build ecological civilization and beauty
The common quality problems of dust-free wiping paper are the strength index, softness, absorbency, pulp mass phenomenon seen by the naked eye, and the phenomenon of high volume glued paper. For dust-free wiping paper, the main factors affecting the strength index are
