Yantai Keda Controlled Atmosphere Equipment Co., Ltd

Yantai Keda Controlled Atmosphere Equipment Co., Ltd. is a professional manufacturer of Keda gas controlling equipment with production and research engineering team on gas controlling equipment and fresh-keeping technology field for over 20 years. Our company has built a scientific cooperation with universities and research institutions and formed the mode of university and enterprise production and research developing mode.

Our company makes the following products, such as ca reefer container, reefer container, gas analyzers, variable frequency deoxygenation nitrogen generators, carbon dioxide generating machines, ethylene removal machines, fully automatic controlled air integrated machines, carbon dioxide generators, ultrasonic humidifiers, nitrogen injection and oxygen control fire prevention systems, low oxygen nitrogen injection grain storage systems, low oxygen insecticidal systems, banana ripening ventilation systems, airtight doors and windows and other air controlling specialized equipment and dozens of fruits and vegetables fresh preservation and the food and flowers etc.

The company continuously innovates and develops in the field of controlled air preservation technology, adhering to the principles and ideas of low-cost investment in high-tech, more economical and energy-saving operation, higher product value, customer priority and social return, thus contributing to the realization of Chinese Dream.

Controlled Atmosphere Warehouse

Controlled atmosphere storage, also known as modified air storage, is the most advanced method for preserving fruits and vegetables today. It is based on refrigeration and increases air composition regulation. By controlling the temperature, humidity, carbon dioxide, oxygen concentration and ethylene concentration in the storage environment, it inhibits the respiration of fruits and vegetables, delays their metabolic process, better maintains the freshness and preservation quality of them and extends their storage and preservation period (sales shelf life). Normally, controlled air storage can extend the storage period by 3-5 times than the regular refrigeration. The fruits and vegetables stored in a controlled air warehouse can be from "awakened" to a "dormant" state after being taken out from warehouse, which can extend the shelf life (sales shelf life) of fruits and vegetables by 21-28 days, which is 3-4 times of that for ordinary refrigerated warehouses.

Technical Overview

Characteristics of fruits and vegetables stored under controlled air:

(1) Effectively maintain the original shape, color and aroma of fruits and vegetables;

(2) The hardness of the fruits is higher than the ordinary refrigeration;

(3) Low fruit rotting rate and low natural loss (water loss rate);

(4) Extending shelf life. Due to the long-term exposure of fruits and vegetables to low oxygen and high carbon dioxide, there is still a long period of "delayed effect" or dormancy after the controlled air is released;

(5) Suitable for long-distance transportation and export. The quality of fruits and vegetables has been significantly improved, creating conditions for export and transportation;

(6) Many fruits and vegetables can achieve seasonal production, annual sales and annual supply, thus creating good social and economic benefits.

Warehouse Body

The air controlled warehouse body not only requires good insulation to reduce the impact of external heat on the temperature within the warehouse, but more importantly, it requires good air-tightness to reduce or eliminate the pressure of external air on the air composition within the warehouse, ensuring fast adjustment speed and small fluctuation amplitude of the air composition within the warehouse, thereby improving storage quality and reducing storage costs. The controlled air storage body is mainly composed of an airtight layer and an insulation layer.