filter media, 1) Suitable for USA,EU,Asia and Africa 2)By SGS,RoSH,ISO9001 3)TT ,L/C Hydrophilicity Bio media ... Many research have shown that biocompatibility and hydrophilicity have a great influence on the performance of biological filter media. ... Large specific surface area and strong impact resistance. HDPE filter media made by special processing technology with peculiar ring structure ...