Do I need to be notarized if I lose my certificate of origin when I settle in Taiwan Province Province?

Yes, all mainland official documents in Taiwan Province Province need to be notarized by the notary office. You need to notarize the lost certificate of origin at the local notary office, and then submit the verified document to the Immigration Bureau after verifying the SEF document in Taiwan Province Province. After obtaining the approval documents from the Immigration Bureau, you can go to the household registration office in Taiwan Province Province to register your household registration and get your ID card.