Hangzhou AiSW Instrument Co., Ltd., established in 2020 as a wholly-owned subsidiary of Hangzhou Aihua Instrument Co., Ltd.— a renowned leader in China's acoustic measurement instrument industry. The subsidiary was specifically founded to advance the development of domestic medical acoustic instruments. The company's core expertise lies in developing otoacoustic diagnostic equipment and related medical electronic instruments. To date, AiSW has obtained medical device registration certification for multiple product lines including: - Pure-tone audiometers - Middle ear analyzers (otoacoustic impedance/admittance test systems) - Otoacoustic emission hearing screening devices These medical instruments, compliant with international performance standards, are widely applied across diverse healthcare settings such as hospital ENT departments, occupational health clinics, rehabilitation centers, medical examination institutions, and educational facilities. To provide comprehensive solutions, AiSW also serves as an authorized distributor for precision acoustic measurement instruments from its parent company Aihua Instrument and sister company Hangzhou Aihong Instrument Co., Ltd. Our product portfolio encompasses: • Sound level meters • Sound calibrators • Measurement microphones • Ear simulators and acoustic couplers • Hearing aid analyzers and verification equipment For detailed product specifications and company information, we cordially invite you to visit our official website at www.hzaisw.com.