Detailed Product Description The tri-Y shape packing is a kind of new packing models. On the base of the ... disadvance, can be produce by ceramic, plastic, metals, it is a brand-new packing. The patent is recevied in 1998. The ... acid, fine chemical, medicine, environmental protection etc. The utilization has a good result in Dalian petrochemical plant, Zhenhai petrochemical refinery, Lanzhou ...