above 14 years old
MYSS003
1. When open、 close、 lock and unlock a door、 we must use our hands to have contact with door handle or doorknob.
2. Many people in the world get infection because of this hand contact with door handle and door lock.
3. The common diseases caused by door handle are Common Cold、 Meningitis、 Swine Flu and Calicivirus.
4. No one has the time to clean door handle every two hours、 plus disinfectants may contain chemicals which may cause respiratory irritation、 injure bare skin and discolour the objects they are trying to treat.
CHRISTINE WONG HUI JIE
SHIRLEY WONG EN CHIEH
LAU EN TONG