low cost commercial greenhouse vertical hydroponic grow systems/growing tower for sale

1. Description 
Hydroponics a method of growing plants without soil by instead using mineral nutrient solutions in a water solvent. Terrestrial plants may be grown with only their roots exposed to the nutritious liquid, or the roots may be physically supported by an inert medium such as perlite or gravel.
The nutrients used in hydroponic systems can come from an array of different sources, including (but not limited to) from fish excrement, duck manure, or purchased chemical fertilisers.
Plants commonly grown hydroponically include tomatoes, peppers, cucumbers, lettuces 

2. Techniques

1) Static solution culture
In static solution culture, plants are grown in containers of nutrient solution, such as glass Mason jars (typically, in-home applications), plastic buckets, tubs, or tanks. 

2) Continuous-flow solution culture - The nutrient film technique (NFT)
In continuous-flow solution culture, the nutrient solution constantly flows past the roots. It is much easier to automate than the static solution culture because sampling and adjustments to the temperature and nutrient concentrations can be made in a large storage tank that has potential to serve thousands of plants.
The main advantage of the NFT system over other forms of hydroponics is that the plant roots are exposed to adequate supplies of water, oxygen, and nutrients. 

3) Aeroponics
The method requires no substrate and entails growing plants with their roots suspended in a deep air or growth chamber with the roots periodically wetted with a fine mist of atomized nutrients. Excellent aeration is the main advantage of aeroponics.

4)Deep water culture
The solution is oxygen saturated by an air pump combined with porous stones. With this method, the plants grow much faster because of the high amount of oxygen that the roots receive.

3. Planting pattern
The A-frame tube cultivation system


The trough type floating cultivation
Leafy vegetables
Vertical pipe cultivation
Spiral pipe cultivation

4. Pictures for projects







5. Company:
Zenong is a specialized greenhouse engineering company integrating design, production and installation. We have four domestic top-level greenhouse skeleton production lines, with an annual output of about 150,000 tons of galvanized skeleton parts. All our personnel and workers have been professional trained, to provide our customers with best quality greenhouse, high planting technology and perfect after-sales service.
The company has always insist to scientific and technological innovation, excellent quality and perfect We fully serve every customer for technical training, experts on-site guidance, and output of agricultural technicians, so that our customers must never worry about the construction and management of greenhouse. 
We adhere to the principles of integrity, professional and enthusiasm, willing to develop with our customers to achieve win-win development.

6. What we can provide to you?
Strong Technology Team:
Professional R&D center guarantee top quality and advanced reliable design for each project.
Customization:
All the greenhouse design is made according to customers' local climate condition and requirements.
Good after-service:
We could send engineer go abroad for correct installation, horticultural service and other service for you.
Quality warranty:
If any parts or structure has some problem within warranty period,we will maintain or change free of charge.