imported membrane stainless steel 304 food grade high quality,low cost High quality!!! New designed!!!A, Adopt the RO(reverse osmosis) filtration technique, making the water conductivity meet the international standard GB17323-1998, No impurity material and bacteria with good tastesB, The ESPA-4040 membrane, can make the recovery to be 50~75%, desalinization ratio to be 98%. Can get rid off 99.99 ...