Tianhua Tech is the leader in the industry of oxygen-absorption packaging, a food and goods preservation solution, in China. We specialized in the research, development, manufacturing and marketing of our patented flag-ship product "504 diabsorber"?, a oxygen and carbon dioxide absorber. Tianhua Tech also innovated the industry by first introducing the "504 diabsorber packet" with three-layer compound oil-proof packaging technology several years ago. With three patents of invention and over fifteen years of experience, we have well established our foundation of being the leading supplier of the solution in China.      Currently, Tianhua Tech offers a verity lines of products called "504 Diabsorber Series" to meet the variety demands from the market. Being the first product on successfully preserving additive-free Chinese moon cake by extending its shelf life more than twenty times, "504 diabsorber"? has established its reputation of reliable quality, excellent performance and remarkable effects in the domestic market. Hundred of millions of kilogram of additive-free Chinese moon cake have been successfully preserved in the past years in domestic market.