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A mask has been an indispensable item in our daily life after covid-19 infiltrates the world.
Masks are used numerously. Accordingly, the mask waste number is 129 billion.
Dumped masks are so light that they float while they are processed in a landfill,
making masks hard to be processed. Experts recommend that mask strings be tied and thrown away,
which, in reality, does not happen. When dumped outdoors, it is done indiscriminately
because there is no appropriate tool to cut masks.
Pocheon-si, South Korea