Soldering Tin Bars, (rods, sticks)

We need over 99% tin containig soldering bars (rods) to use in production and would like to recieve price offer for 500 kg (including terms of delivery).
Composition other than tin does not matter much. But anyway please let us know composition.

We use about 60cm long rods with trapezoid shaped sections smaller than 1cm2.
But it is not obligatory, sizes near to that may be acceptable.