Sarong industry's main product is steel security doors,its target market is all over the world,the grade of the quality is medium,top. First of all, we assure our customers of high quality,we introduced following equipments:1.metslwork stamping & folding system,2.hydraulic equipment,3.rolling equipment,4.auto-adjusting flat cutting system,5.auto-spray coating quipment .welcome to visit our factory!