yeah, you need to apply every year for a new 1 year Extension of Stay, it is annoying that you can not apply for a 5 or 10 year Extension of Stay, but it is what it is.
No handouts, official websites, that makes live easy, here is the police order, just show them and give them this link to the complete Police Order
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%20Bureau%20order%
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-2557%20%
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4%29%20-%20extension%20criteria%20&%20conditions%20en.pdf