A few years ago, central air conditioning and fresh air systems were only high-end home improvement options in some villa areas, but now they have become the choice for many families, especially in northern cities.

On Jan 14th, 2022. Our machinery sales department went to our factory in Yingde, Guangdong, China. Wish everyone that is reading this passage would come and join us on the tour in the future. We will show you our hospitality, and professionalism of over 15 years HVAC manufacturing experience.

This year's Spring Festival holiday in China is from January 31 to February 6, and workers at VENTECH factory have a few days off. Our sales department and administration department will be on a public holiday with the country starting tomorrow.

Now there are many ventilation duct materials on the market, so how should we choose?

With the support of customers in various regions, the total sales volume of our phenolic duct board cutting machines in 2021 will reach 82 units, doubling the sales volume during the epidemic period in 2020.

With the improvement of the economic level, people's quality of life is constantly improving. Central air-conditioning and fresh air systems have appeared in every family, creating a healthy, comfortable and clean living space for everyone.

Central air-conditioning is increasingly used in various buildings to bring people a comfortable feeling. In the entire process of central air conditioning, the air outlet is a problem that cannot be ignored.

Phenolic resin is formed by polycondensation reaction of phenol and aldehyde materials in the presence of acid or alkali catalysts. Commonly used phenolic materials include phenol, toluene, and xylene

Ventilation duct occupies a more important position in ventilation and air conditioning. It has a large construction area, a long construction period, and a relatively large proportion of the total cost.

When galvanized air ducts pass through walls, use non-combustible thermal insulation materials such as rock wool to seal. When installing the galvanized air duct, it should be installed while passing through the nylon wire, so that the running light can be used for the tightness test.