Applying Hongkong visa in Thailand

Chantha, you need the following documents: a copy of your passport and work permit in Thailand, a filled-out application form affixed with a recently-taken photo, round-trip transportation arrangements, hotel reservations, a financial standing proof, and an invitation letter issued by the conference organizer. If the application is directly handled by the embassy, it takes four working days to get it and the fee is THB 1200. If it's sent to HK side, it takes about one month and you need to pay extra THB 800.