Thanks to our repetitive research and development and innovations in techniques, we have been a professional manufacturer for GRP water tank since SERIM was established on December 1993. Based on manufacturing technology for GRP water tank and quality control (ISO 9001, WARS, PSB), our reputation is getting good position with our brand HI-TANK in domestic and international side. With development as to ZIO-TANK with bolting assembly which is resistant to germ and SR-TANK having stainless bolting assembly, we have surely a high-position in this water tank business.

HITANK

ZIOTANK

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HI FOUNDATION