Projector BenQ ??????????? ????????????????? DLP ???????????????? !! ???????????????????????????????????????????????????????????????????????????????????? Projector BenQ ?????????????????????????????????? ???????????????????????? Projector BenQ ???????????????????????????????????????????????????????????? ????????????
เเอลกอฮอล์ (Alcohol) เเบ่งประเภทตามการใช้งานกี่ชนิด
?????????????????????????????????? ????????? ???? ?????????????? (Ethyl Alcohol) ?????????????????????????????????????????????????????????????????????? ???? ????????? ??????????????????????? ?????????????????????????????????????????????????????????????????????????????????????????????? ???? ???????????????? ????????????????????