IN THE STRUCTURE OF THE CABLE,THE MULTIPLE KEVLAR YARN IS USED AS REINFORCEMENT ON THE OUTSIDE OF THE TIGHT JACKETD SINGLE MODE OR MULTIMODE OPTICAL FIBER AND THE FIRE RETARDANT FLAT SHEATH IS EXTRUDED TO FORM AN OPTICAL CABLE .THE PERFORMANCE OF THE PRODUCT IS BETTER THAN THE NATIONAL STANDARD AS THE PREMIUM OPTICAL FIBER IS SELECTED WITH RATIONAL NUMBER OF KEVLAR YARN AND DESIGN TENSION AND MADE BY SPECIAL EQUIPMENT WITH PRECISION MOLD.