Shanghai Haoyi Scientific Equipment Co., Ltd. is a high-tech trading company specializing in instrument sales. We are committed to serving domestic industries such as health supervision, disease control, occupational safety, environmental monitoring, and clean rooms. We firmly believe that the value of sales lies in service. Since our establishment, we have won the trust of one customer after another through our service philosophy of integrity, professionalism, speed, and innovation. We are guided by relevant national standards and provide customers with reliable testing equipment and technical consulting. At the same time, introducing advanced applications and experiences from abroad provides new research directions for scientific research institutions. We also provide the following services: free agency for various instrument maintenance and measurement. Every member of Haoyi adheres to the principle of honesty in life and service in work. Win credibility with integrity and win customers with service. The company's main agent brands are TSI (centralized air conditioning and ventilation testing equipment for public places, individual sampling pumps, flow calibrators, dust exposure monitoring devices, respiratory mask tightness testing) in the United States, World Particle Monitoring, and Fluid Flow. SKC (Individual/Regional Sampling Pump, Sampling Bag, Flow Calibration) in the United States is the world's largest manufacturer and supplier of air sampling, and also a world leader in air sampling technology. Hangzhou Aihua AWA (Noise Exposure, Vibration Monitoring, Spectrum Analysis) takes the lead in the domestic market share of noise and vibration instruments