A: There is no partition filter, the default mode is double-sided protective netting, the default mode of the partitioned filter is no protective netting, and it is designed according to the available requirements.

B: If the operating environment exceeds 150°C (120°C is recommended), ordinary spray-type protective nets cannot be used, only galvanized protective nets can be used.

C: All high-efficiency filters, the default is to glue production

D: The default fold distance of the filter without partition is about 28 folds/10cm

E: The fold distance of the filter with partition is about 10-12mm by default. The standard requirement is 11mm/fold. In the actual production process, three different widths of 3.5/4.5/7mm will be used for the production of filter media based on the cost. (The so-called one fold means from the starting point of the crease to the starting point of the next crease)

F: The corresponding filter material (including efficiency and filter paper model) must be used in accordance with the product requirements. The product filter material without partition cannot be mixed with the product filter material with partition.

G: The corresponding sealant must be used in accordance with the regulations. The high-temperature filter adopts different sealing glues according to the temperature requirements. The red high-temperature glue can withstand a temperature of 300°C, which can be as high as 350°C in an instant. The liquid tank filter must be sealed with a specific jelly glue.

H: The material and assembly method of the outer frame must be selected and the sealing strip or gasket must be adhered in accordance with the regulations.

        Filter naming convention: It is used for air filtration and tested by the sodium flame method specified in the national standard GB/T 6165. The filtration efficiency: ≥99.9% is called a high-efficiency air filter. Filtration efficiency: ≥99.99% is called super high efficiency air filter.

        Generally, the filter made of corrugated fiber material as the filter material is a high-efficiency filter, and the filter particle is about 0.1-0.5μm.

        In some cases, if the filter efficiency of a filter made of non-woven fabrics and other filter materials can reach 95% and above, it will also be called a high-efficiency filter, but the filter particles are about ≥0.5μm. Strictly defined as sub-high-efficiency filter or medium-high-efficiency filter.