1. material: EPDM, silicon rubber, CR, NBR, Composite material 2. colour: can be ... reached or surpassed the following requirements including JG/T187-2006 (China), EN12365 and EN681 (EU), DIN7863, DIN/ISO3302 (Germany) and ASTMC ... (USA). Therefore, our advantages are, without doubt, beyond compare in China, especially in design, molding, flow control, measurement, product appearance and ...