Gas regulator import request Bolivia

I am writing to you from Bolivia, we are a small company and I would like to know your natural gas regulator products, for example B-6 of 19 mbar, B-10 of 19 mbar, B-16 of 19 mbar, B-25 of 19 mbar and also for commercials at 140 mbar and 300 mbar. Please send me options and costs for a better analysis.