Medical Equipment Research Center Viettel High Technology Industries Corporation Hanoi Vietnam;
Medical Equipment Research Center Viettel High Technology Industries Corporation Hanoi Vietnam;
Medical Equipment Research Center Viettel High Technology Industries Corporation Hanoi Vietnam;
Medical Equipment Research Center Viettel High Technology Industries Corporation Hanoi Vietnam;
Air Quality Sensors; Sensor Calibration; Air Pollution; Fine Particle; Laser Particle Sensor; PM1.0; PM2.5; PM10;