Yes, char siew is kind of bbq pork. It sweet.
There is char siew (char siu) sauce that can use to make this but looks over price in america
https://www.amazon.com/Lee-Kum-Kee-Chinese-Barbecue/dp/B07QTW7JMH
Here, it's selling for 4 SGD.
Alternatively, search for a recipe for char siew (or char siu).
Here is one of them.
https://thewoksoflife.com/chinese-bbq-pork-cha-siu/