The GRP/SMC/FRP water tank use food grade SMC panel wichi through hign temperature ,high pressure and mechanical molding .In managent process aspect,the mechanical molding add the strength of shockproof and shock resistant,improve the pressure resistant and service life and overcame the shortage of hand paste product's uneven intensity.Flange is arranged around the plate,does not need corner connectiong piece in assembling process,with more flexibility and agility.