84" has its own special meaning. In 1983, Beijing Ditan Hospital accepted a scientific research project from the Beijing Municipal Science and Technology Commission to develop a disinfectant that can kill hepatitis viruses for daily protection of medical staff. After more than a year of hard work, from more than 70 formulas and more than 3,000 tests, we finally passed the expert review organized by the Beijing Municipal Health Bureau in October 1984.
In order to commemorate the successful development, this disinfectant was named "84" disinfectant. The 84 disinfectant produced and sold by Long'an Company of Beijing Ditan Hospital has a high reputation and credibility. This is what everyone is familiar with. "Long'an Brand 84 Disinfectant", because it is produced by the research and development unit, has won the first choice and recognition of many consumers. The birth of "84" is a major innovation in China's disinfection industry and has almost become synonymous with disinfectant. Consumers never knew the meaning of disinfection and disinfectant, but today they prefer Longan 84.