Mitkrit tire in America comes from general development ratai knives for choppers into the bark. Since then, aborigines, South mueangomerika ngaphuen tea knives and invented city, Malaysia devised, knife and is used widely.
Knife rubber in South America evolved from a common knife, chop into the bark. After Native American invented the knife. And Shang native Malaysia invented a knife. And has been used widely
South America developed from the rubber knife general for hack into the bark of the tree. Then the natives of South America invented knives. And Chang native Malaysia invented knives and is used widely.