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Precision Electroacoustic Components

Changzhou Qinglong Electronic Components Co., Ltd. – Innovating since 1994 with advanced buzzers, transducers, loudspeakers, and ultrasonic sensors for global industrial and automotive applications.

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Qinglong Factory

Company Profile

Changzhou Qinglong Electronic Components Co., Ltd. was founded in May 1994 and has since been professionally engaged in the research, development, and manufacturing of electroacoustic components. Our core product lines include loudspeakers, buzzers, and ultrasonic sensors, serving a wide range of industries from automotive to consumer electronics.

Backed by a team of top domestic experts in electroacoustics, electronics, precision molding, automation, and polymer materials, we maintain independent R&D capabilities and original innovation in acoustic technology applications. Our commitment to quality and technological advancement has positioned us as a trusted supplier worldwide.

1994
Founded
30+
Years Experience
Global
Reach

Our Product Range

High-performance electroacoustic components engineered for reliability, precision, and durability across diverse applications.

Magnetic Transducer Buzzer (DIP Type)

Magnetic Transducer Buzzer (DIP)

High-sound-output buzzer ideal for industrial alarms, control panels, and household appliances requiring through-hole mounting.

  • • Operating Voltage: 3V–24V
  • • Sound Pressure: ≥85dB @ 10cm
  • • Resonant Frequency: 2.7kHz–4kHz
  • • DIP Mounting Type
Magnetic Transducer Buzzer (SMD Type)

Magnetic Transducer Buzzer (SMD)

Compact surface-mount buzzer designed for space-constrained PCBs in modern electronics and IoT devices.

  • • Low Profile: ≤9.0mm Height
  • • Voltage Range: 3V–12V
  • • Sound Output: ≥80dB @ 10cm
  • • RoHS Compliant
Piezo Transducer & Buzzer (DIP)

Piezo Transducer & Buzzer (DIP)

High-efficiency piezoelectric buzzer with excellent sound clarity for medical devices and industrial equipment.

  • • High Impedance: 1.5kΩ min
  • • Frequency: 3.8kHz ±500Hz
  • • Sound Level: ≥85dB @ 10cm
  • • Durable Ceramic Element
Piezo Transducer & Buzzer (SMD)

Piezo Transducer & Buzzer (SMD)

Miniature SMD piezo buzzer for compact consumer electronics, wearables, and smart home systems.

  • • Ultra-Thin Design: ≤5.0mm
  • • Low Current Consumption
  • • Frequency: 4.0kHz ±300Hz
  • • Lead-Free Solder Compatible
SMD & Micro Speaker

SMD & Micro Speaker

Miniature surface-mount speakers for smartphones, tablets, and portable devices requiring high audio fidelity.

  • • Impedance: 8Ω or 32Ω
  • • Power Rating: 0.5W–1W
  • • Frequency Response: 500Hz–10kHz
  • • Compact Sizes: 10mm–20mm
Automotive Parking System Buzzer

Automotive Parking Buzzer

Ruggedized buzzer designed for vehicle reverse warning systems and parking assistance modules.

  • • Wide Voltage: 9V–16V
  • • Operating Temp: -30°C to +85°C
  • • High Noise Immunity
  • • IP67 Sealed Options
Open Style Ultrasonic Sensor

Open Style Ultrasonic Sensor

Used in proximity detection, level sensing, and obstacle avoidance systems with wide beam angle.

  • • Frequency: 40kHz
  • • Detection Range: 20cm–3m
  • • Open Transducer Design
  • • High Sensitivity
Closed Style Ultrasonic Sensor

Closed Style Ultrasonic Sensor

Sealed ultrasonic transducer for harsh environments, including automotive and industrial automation.

  • • Waterproof & Dustproof
  • • Operating Temp: -40°C to +105°C
  • • Stable Performance
  • • Long Service Life

Core Capabilities

Backed by decades of expertise and cutting-edge technology

R&D Excellence

Independent research institute with experts in acoustics, materials, and automation.

Advanced Manufacturing

Precision tooling, automated assembly, and strict quality control systems.

Quality Assurance

ISO-compliant processes and rigorous testing for reliability and consistency.

Global Reach

Serving clients across Asia, Europe, and North America with responsive support.

1994
Founded
30+
Years Experience
50M+
Components Shipped
30+
Countries Served

Get in Touch

For inquiries, technical support, or partnership opportunities, please reach out through the official website.

Contact Information

Contact: Henry Lu

Phone: 0086-519-85500395

Email: henrylu@qinlon.com

Address: No.20 Shunyuan Road, Xinbei District, Changzhou City, Jiangsu, China

Website: https://www.qinlon.com

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