Nanjing Tianhua Technology Co., Ltd. is a Chinese manufacturer of active packaging solutions that produces oxygen absorbers, desiccants, multi-gas scavengers, gas indicators, and automated dispensing equipment for the food, pharmaceutical, and industrial packaging sectors. The company's products are used in food preservation, cold-chain logistics, pharmaceutical packaging, and industrial corrosion protection applications across global supply chains.
Founded in 1991 by Ying Guanxiong in Nanjing, Jiangsu Province, the company pioneered China's first industrial iron-based oxygen absorber. Over three decades the company has grown to employ over 200 people across 20,000+ sqm of facilities, producing 500 million units per month. The company holds ISO 9001, BRCGS, and FDA certifications, operates GMP-compliant cleanrooms, and has been awarded National High-Tech Enterprise certification.
Products offered:
- Oxygen absorbers for food packaging
- Pharmaceutical oxygen absorbers (MedShield brand)
- Meat freshness absorbers (Mr-RO brand)
- CO2 absorbers
- Ethylene absorbers (Oxyfree brand)
- Food desiccants
- Pharmaceutical desiccants
- Oxygen indicators (tablet and liquid)
- CO2 indicators (tablet and liquid)
- Auto-dispensing machines
- Vacuum packaging
The company markets its products under the Oxyfree, MedShield, and Mr-RO brands and serves clients across food, pharmaceutical, electronics, and industrial sectors worldwide. Facilities include the Jiangning facility, Lishui packaging facility, and Jiuzhu production address in Nanjing, with 4,500+ sqm of warehousing capacity supporting global export logistics.

