1. Non-toxic ruber shower head. 2. Temperature proof. 3. Certification: ISO9001:2008, ISO/TS16949. 4. Good quality. Rubber shower head descriptions: 1. Materials ... : SI, also NR, NBR, ACM, HNBR, FLS, CR, SBR, EPDM, FPM, IIR, VT etc. 2. Characteristics ...