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There are grain holes in every bathroom to exhaust wastewater, but with some difficulties including stocked by hair or cockroach climb out from it.
Collection hair holer is a new type grain hole cover, which helps us easy to clean and prevent the cockroach climb out.
Collection hair holer make user easy to clean and open it with two ergonomically indentations.
ZHAN,ZI-LIN LIN,LIANG-JYUN JHANG,JIA-YU Wayne HUANG