YYW polymerizer is Ao Jia Yuan¡¯s new high-tech patent. (No. for patent: 2003101238428) It is one of the best suitable materials for concrete perforated bricks. YYW polymerizer is Ao Jia Yuan¡¯s new high-tech patent. (No. for patent: 2003101238428) It is one of the best suitable materials for concrete perforated bricks.