We are specialized in producing FRP pressure vessel. We have the diameter2.5", 4" and 8" ,the work pressure from 300PSI to 1200psi. Lengh is :1,2,3,4,5,6,7,membrane elements. It is suit for DOW,TORAY,CSM,KOCH,Hydranautics,and other membranes. we have passed the ISO9001:2000 quality system certify.