We give U.S. made rawhide flip chips rarely. Usually they get special treats on Friday nights, and often a flip chip is that treat. However, the dogs are always supervised while they are chewing (they usually are done with a flip chip within a half-hour). My dog Paula has swallowed too-big of pieces before, and gagged - I've had to pull a piece out of her mouth/throat. This is why I don't give them any treats unsupervised. If you decide to give rawhide, I'd suggest not to get a big bone that stays out all the time, because then your puppy may chew on it when you aren't around. Get either flip chips or very small bones that the puppy can finish in a short time, while under your watchful eye.
I don't know what the availability is in Sinapore, but here in Toledo, Ohio, we can buy other discarded animal products for our pets. Smoked pig ears, pig snouts, beef chins, pizzle sticks, smoked tendons... These are just a few of the products we have available. We like to give the pig snouts and beef chins as special treats - they are softer and easier to chew than the rawhides. (However, that also means that they don't last as long!)