What is the origin of "84" in 84 disinfectant?

"84" has its special meaning. From 65438 to 0983, beijing ditan hospital accepted the scientific research project of Beijing Science and Technology Commission, and developed a disinfectant that can kill hepatitis virus for daily protection of medical staff. After more than a year's efforts, from more than 70 formulas and more than 3,000 tests, it finally passed the expert review 1984 10 organized by Beijing Municipal Health Bureau.

To commemorate the successful development, this disinfectant was named "84" disinfectant. The 84 disinfectant produced and sold by beijing ditan hospital Longan Company has a high reputation and credibility. This is the familiar "longan brand 84 disinfectant". Because it is produced by the institute, it has won the first choice and recognition of many consumers. The birth of "84" is a pioneering work of disinfection industry in China, and it has almost become synonymous with disinfectant. Consumers never know the meaning of disinfection and disinfectant. Today Longan 84 is the first choice.