This is kay from chunpeng prestressed concrete strand co., ltd, manufacturer and exporting pc strand and unbounded pc strand from tianjin china for 21 years. We can produce standards including astma416, en10138, iso6934, bs5896 and jisg3536. Do you have interest in pc steel strand and pe coated steel strand? Please contact me for detailed information. Bst rgds, Kay Email: kayyang@pcstrand.Cc Skype: kayyang12123