High-efficiency particulate air (HEPA) filters with pleats are mainly used for intermediate filtration in air conditioning and ventilation systems, as well as in industrial purification processes in pharmaceuticals, hospitals, electronics, and food industries. They can also be used as pre-filters for HEPA filters to reduce the load on the HEPA filter and extend its service life. Due to their large air-facing surface, combined medium-efficiency air filters offer high dust collection capacity and low air velocity, making them considered the best medium-efficiency air filter structure currently available.

High-efficiency particulate air (HEPA) filters with diaphragms

Primarily used in intermediate filtration of air conditioning and ventilation systems, and in industrial purification processes such as pharmaceuticals, hospitals, electronics, and food processing. They can also serve as pre-filters for HEPA filters to reduce the load on the HEPA filter and extend its service life. Due to their large airflow face, combined HEPA filters offer high dust holding capacity and low air velocity, making them considered the best HEPA filter structure currently available.

1. Key control parameters for selecting HEPA filter products include rated airflow, filtration efficiency at rated airflow, initial resistance at rated airflow, dust holding capacity, and overall dimensions.

2. According to the test methods specified in JG/T22-1999 "Performance Test Methods for Air Filters for General Ventilation," filters with an atmospheric dust counting efficiency of ≥20% and <70% for particles ≥1.0μm in diameter are classified as HEPA filters.

Mainly used in intermediate filtration of air conditioning and ventilation systems, and industrial purification in pharmaceuticals, hospitals, electronics, food, etc. It can also be used as a pre-filter for high-efficiency filters to reduce the load on the high-efficiency filters and extend their service life. Due to its large air-facing surface, the combined medium-efficiency air filter has a large dust capacity and low air velocity, and is considered to be the best medium-efficiency air filter structure currently available.

**High-Efficiency Air Filter with Separator**

Mainly used in intermediate filtration of air conditioning and ventilation systems, and industrial purification in pharmaceuticals, hospitals, electronics, food, etc. It can also be used as a pre-filter for high-efficiency filters to reduce the load on the high-efficiency filters and extend their service life. Due to its large air-facing surface, the combined medium-efficiency air filter has a large dust capacity and low air velocity, and is considered to be the best medium-efficiency air filter structure currently available.

1. Key control parameters for selecting medium-efficiency air filter products: rated air volume, filtration efficiency at rated air volume, initial resistance at rated air volume, dust capacity, and dimensions, etc.

2. According to the test method specified in JG/T22-1999 "Test Method for Performance of Air Filters for General Ventilation", a filter with an atmospheric dust counting efficiency of ≥20% and <70% for particles with a diameter ≥1.0μm is a medium-efficiency air filter.