The Unique Four Technologies:
1) The genuine materail at a fair price and the most cutting edge, reliable twice-weld technology.

2) (Patent technology) the fast, stable, reliable air source mouthpiece

3) (Patent technology) The new type DC electromagnetic valve-that guarantees it no long temperature rising.

4)(Patent technology) The new type electronic delay function- that guarantees the compressor starting in non-pressure; that enables its work more reasonable and reliable with longer life.