If you're going to talk about "integration" (read: assimilation), it's worth remembering that they were there first, and it's the Chinese immigrants who are now the majority that has sidelined them.
I still call it integration as it was predominantly secular before a surge of Wahhabism from oil, now there is a divide.
You can look into Iran, Iraq and even Afghanistan. Unfortunately they didn't have a Lee Kuan Yew to draw in the line. My mum told me how no one cared about Halal only sections in Iran, my dad said the same about Iraq even though they would identify as muslims.
If you're going to talk about "integration" (read: assimilation), it's worth remembering that they were there first, and it's the Chinese immigrants who are now the majority that has sidelined them.