Nylon 612 is more flexible and tran***rent than Nylon 6 and Nylon 66 and better in water absorption and intensity,so it will be made for the toothbrush and industrial brush fiber,and in addition,it will be used for many fields,such as precision parts,external coat of cable,oil pipe,rope of proof-oil,conveyor,bearing,washer,etc.or even for gunstock,helmet of the military industry.