LED diseupeullei gumae, yeongan USD100000leul jeol-yaghaneun bangbeob-eun mueos-ibnikka?

jung-gug-eneun 500gae isang-ui LED diseupeullei jejo-eobchega issseubnida. i modeun LED diseupeullei gong-geub eobchee imeil-eul sseul ttae,

geudeul jung 99%neun yeongan 20%leul jeochughaneun bangbeob-eul moleubnida.

waeyo? geudeul daebubun-eun chong biyong-eul jeol-yaghal saeng-gag-i eobs-seubnida.

20% hal-in-eul hamyeon daebubun jaelyoga bakkwibnida.

jaelyoleul bakkuji anh-eumyeon yeongan 10%leul jeol-yaghaneun bangbeob-eun mueos-ibnikka?

jaelyoleul bakkuji anh-eumyeon 1nyeon-e 20%leul jeol-yaghaneun bangbeob-eun mueos-ibnikka?

gat-eun jaelyolo yeongan 30%leul jeol-yaghaneun bangbeob-eun mueos-ibnikka?

wieseo eongeubhan sang-eob bimil-ibnida.

i modeun sang-eobjeog bimil-eul algo sipseubnikka?