... 823,water tank (toilet water tank),is maken of plastic material ,with toilet ,bidet ,squatting pan ,almost fit for ... ,water tank(toilet water tank) ,is maken of plastic material .water tank is fit for toilet ,suatting pan ... washdown4.Tanks and piping wall thickness exceeded the national standard Quasi-3.6mm,the use of more to ... your visiting.Good luck and happy bidding. color new design plastic water tank