Ling ring of the composition into a six by six identical rhombic connected in a ring, each of the six Mitsubishi ring can be considered as a structured packing, and use of a smaller height to diameter ratio, when filling the packing arrangement can tendregularized its low cost bulk packing, loading, unloading and maintenance easy, there are structured packing mass transfer efficiency and pressure drop. Is a high-efficiency, high-throughput, low voltage drop and low cost bulk packing, can be widely used for distillation, absorption, stripping and extraction mass transfer unit operations. Widely used in petroleum, chemicals, chlor-alkali, gas, and environmental protection industries device.