Plasma welded manifold is particularly designer for clear plastic or thermosensitive material to reduce running time when resign flows through the running of manifold. It is an optimized solution for balancing resign filling ,quick color shifting or easy configurating multi-tip layout .In addition ,horned inner surface of runner can eliminate shape end and dead angle ,which makes designing hot runner system without limitation .Smooth material running reduces pressure drop by 10% in the manifold as well as improves material &color shifting.