Gauze packing is an important milestone of the development of clear and neat filling. This kind of filling consists of arranged web pieces pressed into corrugation. Obliquity of corrugation is 30 or 45 and the neighbor two pieces are of opposite directions. When filling into the column, upper and lower filling trays cross by 90. It has advantages of high effectiveness, low pressure drop and large flow rate. This product includes BX, CY types, generally used in vacuum distillation, normal pressure distillation and absorption processes of matters hard to separate or thermal sensitive.