Gong Cha has several outlets in Malaysia that are certified halal by JAKIM, including:

1. Gong Cha Suria KLCC
2. Gong Cha Pavilion KL
3. Gong Cha Setapak Central

Other outlets are in the process of applying for halal certification.

For specific product information, especially in Australia, you can check the menu for halal-certified items: Gong Cha Australia Menu.

However, for the UK and US locations, there is no mention of halal certification on their websites.

And Allah knows best.