Thiếtkế khung ảnh trang trí bằng mạch led hình trái tim
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Tên Số lượng
(chiếc)
Thành tiền (đồng)
Đèn led 32 15.000
Linh kiện
(transitor, tụ hóa, điện trở
thường…)
50.000
Mạch in 1 80.000
Pin 9V 2 10.000
Chi phí khác 20.000
Tổng số 175.000
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