Tianhua Tech Co.,Ltd(China)is specialized in the research, development,manufacturing and marketing of our flag-ship products OxyFree 504™ &"504 diabsorber"®,a series of oxygen and carbon dioxide absorber,both iron based or non-iron based.Fifteen years ago,Tianhua Tech,pioneered the oxygen scavenging packaging solution in China.   
We had introduced the first and second generation of oxygen absorber ( also called oxygen scavenger) into the domestic market. In addition, We invented the patented general-purpose "504 diabsorber"®,the first of its kind in the world.With the additional capacity of CO2 scavenging, it shows the advantage over its competitors of "O2-only absorber",on preventing fermenting effect by suppressing the growth of anaerobic microorganisms in an oxygen-free environment during its application.
ISO9001 certified,Tianhua Tech has consistently demonstrated the high quality of its products.
With"Customer-centered"in the mind,Tianhua Tech commits to supply the best solution and service to the needs of our customers all over the world.

Effects of O2, CO2, Aw upon the Preservation of Foodstuffs

O2 is one key element for the survival of aerobe and the source causing oxidative deterioration. Without oxygen, foodstuff won't be oxidized, fungi and other bacteria won't grow, and moth can not survive.

CO2 is a vitally important factor for the growth of yeast and other anaerobia, which could be one major reason causing the foodstuff deterioration in a oxygen-free environment. The growth of yeast and other anaerobia stimulated by the presence of CO2 and O2-free condition will speed up the foodstuff deterioration. In the case of preserving high moisture and oily Chinese moon cake, the elimination of O2 and CO2 is very critical.

Water Activity, Aw, is also an important factor of affecting the growth of microbe. It is also a major concern in the food preservation, especially in the aspect of mold prevention.

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