Soda ash dense and light

Soda ash dense and light.
Gentlemen
We are manufacturers of glass. For manufacture of bottle glass we ned a considerable quantity of raw materials.
We are interested in soda ash dense and light, in quantity of 800 tons per month.
We ask to send us the off on raw materials delivery. We ask to specify the lowest prices, proceeding from purchase volume a month.
We look forward to receiving your detailed offer.