plants - liwa complex expansion and development of the borouge complex expansion of the batangas petrochemical complex socar polypropylene and polyethylene plants fertilizers yara urea granulation plant fertilizer complex iowa kingisepp ammonia production plant kima fertilizer complex oil & gas refining...
, but their functions are completely different from those of a standard septic tank. traditionally, septic tanks have been made out of concrete, a material that has a tendency to break down over time and that requires a considerable amount of maintenance. although the company started out using concrete...