are you referring to the one used by local car wash shops?

I suggest that you ask them kung saan nila binili yung gamit nila.

I once found this sa Shopee, not sure if its the same thing kasi tinigil ko na yung "DIY Car Wash At Home" project ko

https://shopee.ph/product/393825292/9664671950

Project was cancelled since the "foam device" will take up space sa garage, plus, its not that nice to look at.

Naisip ko din if Manual.

https://www.lazada.com.ph/products/f...785733155.html

pero as I said, the "project died na"

last option for me was just to use shampoo from the Chemical Guys