Dr. Nguyen Van Khai:
In a block of only 70 meters in a densely populated area in Hanoi, he spends part of his land growing vegetables, roaming chickens, and he asserts that he is one of the wealthiestDisinfect with Ozone technology
Scientists belonging to the Department of Electronic Physics and Institute of Physics (Vietnam Academy of Science and Technology) have perfected the technology of disinfection by