I'm just wondering how dave judge that the protein is good. Usually cheap protein's substitute the BCAA with other cheaper ingredients, that's why the price is better than others.

This is cheapest protein in the market I think. Even cheaper than 10lb ON for it is unflavored thus no cost on the ingredient.
Have been using this and it is decent, very mixable, can mix with coffee, milo, coco powder, HL milk or anything you can imagine.
Usually I dump 5g sugar and 5g coco powder, about 100ml water then ice, taste like unsweetened HL milk, thick chocolate taste yet not sweat. Taste wise personally it's best of all whey.

I thought Titan whey is based in Philippine?

It is so not convincing, look at the price of the protein. No proper certification. I'm not willing to risk my health by saving some for my pocket.