About Tianhua Tech: Based out of China, Tianhua Tech Co., Ltd specializes in the research, development, manufacturing and marketing of its chief product OxyFree 504. The 504 diabsorber, a series of oxygen and carbon dioxide absorbers, offers both iron based and non-iron based options. Fifteen years ago, Tianhua Tech pioneered its oxygen scavenging packaging solution in China and introduced the first and second generation of oxygen absorbers, also known as oxygen scavengers, into the domestic market. In addition, Tianhua Tech invented the patented general-purpose "504 diabsorber", the first of its kind in the world. About Us: Seventeen years ago, Tianhua Tech pioneered an oxygen scavenging packaging solution in China, introducing the first and second generations of oxygen absorbers into the domestic market. With the additional capacity of CO2 scavenging preventing fermentation by suppressing the growth of anaerobic microorganisms in an oxygen-free environment, OxyFree brand oxygen absorbers have held an increasingly strong advantage over competitors of O2-only absorbers. ISO9001 certified, Tianhua Tech has consistently demonstrated the high quality of its products. With a "customer centered" attitude, Tianhua Tech is committed to supplying the best solutions and service to customers all over the world.