Product Overview
Modern extraction systems efficiently remove moisture-laden air from humid environments such as bathrooms, laundry rooms, and indoor pool areas. Designed to accommodate varying spatial requirements, these units are available in a range of airflow capacities—ideal for both confined washrooms and large-scale residential or commercial settings.

Multiple configurations are offered, including compact exhaust fans and concealed in-line ventilation systems. While installation methods may differ, all models share a unified purpose: redirecting humid air outdoors via connected ductwork to maintain optimal indoor air quality.

General assembly Drawing

Product Installation Method

Step 1: Construct a rigid rectangular framework and securely fasten it to the ceiling substrate.

Step 2: Attach the fan enclosure or storage unit to the preassembled frame using manufacturer-recommended fixtures.

Step 3: Align the duct connector with the airflow directional indicator (marked by an arrow) and lock it into the cabinet’s exhaust port via a twist-and-seal mechanism to guarantee airtight linkage.

Product Performance Curve

Product Performance Specifications

Guangdong Zhongdian Jiajin Environmental Technology Co., Ltd.

originated from Foshan City Nanhai Zhongxing Hardware and Electrical Appliance Factory (with brands including Zhongdian Fresh Air and Zhongdian New Science), is a modern National High-tech Enterprise mainly engaged in manufacturing:

DKT external rotor air conditioning fan (curved and square),

Mixed flow pressurized duct fan,

KTF stainless steel external rotor centrifugal fan cabinet,

Air curtain fan,

Purification type low-noise fan,

Centrifugal low-noise ventilation equipment,

EC frequency conversion digital energy-saving fans, etc.

The manufacturing base is located in Foshan City, Guangdong Province.

Since its establishment in 1997, we have always adhered to the quality line and actively created our own brand, Zhongdian. We have successively passed ISO9001, CE and CCC certifications, and obtained multiple utility model patents. Our comprehensive strength and brand influence rank among the top in the industry.

Guangdong Zhongdian Jiajin Environmental Technology Co., Ltd. adheres to the business philosophy of "technology driven development, respect for talent, reform and innovation, and pursuit of excellence", introduces numerous advanced automation equipment and 5S management systems, attaches importance to user experience of products, and takes continuous customer satisfaction as the business orientation. After unremitting efforts, we have become the leader in the fresh air system market.

Guangdong Zhongdian Jiajin Environmental Technology Co., Ltd. adheres to the principle of prioritizing quality over output, and has won the trust of users across the country with excellent quality and outstanding performance. And strive to enhance competitive advantages in pre-sales, in sales, after-sales and other aspects, and will continue to adhere to the creed of customer first and service first. It is the continuous iteration of products and services, striving to become a leading brand in mid to high end fresh air system equipment.