QINGDAO SINCERE MACHINERY CO., LTD.
Qingdao Sincere Machinery is a professional extrusion machine factory, we focus on plastic extruders, PP PE spiral winding pipe production lines, spiral corrugated pipe machines, storage tank winding welding machine, HDPE/PPR/MPP water pipe machines, PP & PE thick sheet machines, Recycling pelletizing line, shredder and crusher.
