| 摘要 |
PROBLEM TO BE SOLVED: To prolong the life of a door by facilitating cleaning of the door. SOLUTION: The door 7 is made attachable and detachable and parts constituting the door are made of stainless steel material. In addition, plural drain holes 7c are provided at the lower part of the door and the inner surface side of a glass 9 is coated with fluoresisn or photocatalyst.
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