We generally say, no, you don't really need to get your Asian painting stretched and then framed .  Frequently, when they visit us, they say that they have just returned from an Asian holiday, from Bali, Thailand or India. They tell us that they have  a valuable, original, often large oil painting that needs framing. Frequently, they seem to have been regaled with tall tales of the worth of the paintings  they have bought.  They appear to believe, or are under the impression, that their oil painting is quite valuable and that it  should be stretched first and then framed.