> 전시선정기술 > 2016
| 제목 | Dustless Blackboard | ||||
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| 분야 | 실용제품및기타발명 | 년도 | 2014 | ||
| 업체명 | YAN CHAI HOSPITAL LIM POR YEN SECONDARY SCHOOL | 등록번호 | 등록일 | 2014-12-15 | |
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When we clean the blackboard, the dust will be spread out in the air. This product can reduce the amount of the dust released into the environment and make all pupils healthy.
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이전글
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Mug Blender |
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다음글
|
Socks Together |
