New Style Underground Eco-Friendly Septic GRP Plastic Biogas Septic Tank

New Style Underground Eco-Friendly Septic GRP Plastic Biogas Septic Tank. 50+ Year Service Life: Long service life reaching over 50 years under normal circumstances, with some exceeding 70 years. High Strength Lightweight: Density is 1/4 of steel and 2/3 of aluminum, but strength is 10 times that of rigid PVC. Superior Corrosion Resistance: Excellent resistance to acid, alkali, organic solvents, and salts using ortho/meta benzene and vinyl resins. Efficient Sewage Treatment: Anaerobic decay effect is more than twice that of traditional septic tanks with three-stage chambers. Flame Retardant Safety: Flame propagation rate under 25, oxygen index not less than 28, suitable for magnetic sensitive devices. Low Installation Cost: Weighs one-third of concrete tanks, easy to transport and install, reducing labor and construction time. Zero Leakage Design: Integrated manufacturing prevents sewage leakage, protecting soil and surface water from pollution. Low Maintenance Requirement: No power needed, long slag cleaning cycle, and no post management required for buried type units.