Buying used rails for China

Our Company's Basic Requirement for Used Rails:
The types are R50 & R65, the length is 12.5 M or 6 M. No serious corrosion and rust spot.
Chemical index of the Used Rails: C:0.54-0.82%;Si:0.18-0.40%; Mn: 0.60-1.05%; S: 0.04%;
P: 0.035%max;As:0.01%max;
Executive Standard of Products: R50cost-7173-75; R65cost-8165-75;
The Destination Port: China Lanshan Port Bonded Area Warehouse or China
Huangdao Port Bonded Area Warehouse.
Origin: No limited.
Target Price: China Lanshan Port Bonded Area Warehouse or China Huangdao Port Bonded Area Warehouse after customs clearance ex-warehouse price (CIF Price+Chinese tariffs+all kinds of Port charges) is US$200/MT, including our commission as $3/pmt for our group
Quantity：First shipment is 100,000 MT;From second shipment starts from 200,000 MT.Five-year contract can be signed.