Beijing Airport 

1*7Φ15.2 Unbonded PC Strands,Builded by China Railway Group Limited in 2007.

Supplied by Chunpeng PC Strand

More Details Please to 

http://www.pcstrand.cn/pid18079997/ASTM-A421-BS5896-JISG3536-high-quality-82b-low-relaxation-pc-wire.htm