R series Ro membrance is available in SUS304、SUS306 stainless steel which has high temperature capability. Nylon and stainless Ro head are provided to choice according to the budget. Nylon Ro head is a high cost-effective choice. It is made of high quality material and has good effective time in a proper use. Stainless steel Ro head resistant to UV rays and sunlight, and has high pressure capability.