1The lower part is a loop type, increasing the ease of maintenance.
2 Construction is easy and simple.
3 As it is a loop type, no clogging occurs in the drain. (Bolt + shape connection causes clogging)
4 There is no loss of materials such as mold form(cast), etc., because the form is not punctured.
5 Cost-saving effect is over 20 times higher, compared to other catch basins.
6 There is no fear of losing the upper lid(cover) which is an integrated type and a rotating type. (Separated type is often lost or stolen.)
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