Supply of coarse filter plate G4 efficiency filters Tianjin early primary filter plate factory in Tianjin Clyne early effect of the filter paper box paper box composition is determined by the outer layer of wire mesh filter attached cotton composition! Outer paper box made of sturdy wood fiber moisture waterproof cardboard, diagonal hollow skeleton frame is to ensure the strength of the case, taking into account a larger filtration area. Filter and inner filter cotton with professional adhesive bonding, effectively prevent air leakage or increase the resistance caused by the inner and outer layer detachment. Subsequent filtration to reduce stress! Frame thickness is 46mm. Early effect of the advantages of the filter paper frame light weight, easy to install primary filter, replacement! Environmental cost, and long life. More efficient air conditioning system can be protected, efficient filter life! Early effect of the use of filter paper frame: Main filter 5μm particle diameter above the dust. Generally used in microelectronics, pharmaceutical manufacturing, etc. before the dust purification equipment.