Dear Kenta Yoshiyuki,
Please contact your previous school's general office to ask for
the certificate. Because it has been quite a few years, I am not
very sure if your certificate will still be with the school.
Usually the school will keep the certificate for up to
one year before discarding. If the school have discarded your
certificate, then you will need to get a new one from MOE Customer
Service Centre.
A statement of result cost $10, while I Certificate cost
$50.
Best Regards,
Chin Seng
Homework Forum Moderator