... equipment, oil chemical industry components CustomizedOEM & ODM are welcomePlace of originKunShan China (Main land)2. Shipping & Payment Packing ... Manufactuer• Founded in 1987,abundent experience in the manufacture of oil chemical industry forging• 3 workshops occupie20000 square meters ... than 2 complaint cases . 2, material of steel type of 15#,20#,25#,30#.35#,40#,45#,46#,etc.according to customers ...