?????????????????????????????????? ????????? ???? ?????????????? (Ethyl Alcohol) ?????????????????????????????????????????????????????????????????????? ???? ????????? ??????????????????????? ?????????????????????????????????????????????????????????????????????????????????????????????? ???? ???????????????? ????????????????????
ทำไมจึงต้องทำลายอุปกรณ์อิเล็กทรอนิกส์ที่ไม่ใช้แล้ว
???????????????????????????????? ????????????????????? ?????????????????????????????????????????? ??????????????????????????? ??????????????? ????????????????????? ????????????? ?????????????????? ??????? ???????????????????????????????????????????????????????????????? ??????? ??????????????????????????????????????????????????????