hat
4) Li adapte milti-pwen koube wout la, evite fòs la axial Et fwotman bò, diminye etap la fòme pandan y ap asire bon jan kalite a, pandan se tan li diminye depèrdisyon nan pouvwa ak fwotman roulo.
eng
4) It adapt the multi-point bending way, avoid the axial force and side abrasion, reduce the forming step while ensure the quality,meanwhile it reduce the power wastage and roller abrasion.