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Gd SWT Smart Tech Co., Ltd.
Leading China Piezo Buzzer Brand & Piezoelectric Component Manufacturer
Gd SWT Smart Tech Co., Ltd. (Guangdong Siweite Intelligent Technology Co., Ltd.) is a specialized China piezo buzzer brand and high-tech enterprise focused on piezoelectric ceramic materials, electroacoustic transducers, and ultrasonic components. Founded in 1991, SWT has established itself as a professional acoustics solution provider with integrated manufacturing capabilities spanning from raw piezoelectric ceramic production to finished component assembly.
Company Authority & Certifications
Industry Credentials & Quality Standards
SWT holds comprehensive certifications demonstrating manufacturing excellence and automotive-grade reliability:
- IATF 16949:2016 – Automotive Quality Management System Certification
- ISO 9001:2015 – Quality Management System
- ISO 14001:2015 – Environmental Management System
- National High-Tech Enterprise (China)
- Specialized and Innovative "Little Giant" Enterprise (Guangdong Province)
- RoHS and REACH Compliance for all product lines
Industry Standards Development Authority
As an official standards drafter, SWT contributes to China Electronic Components Association standards:
- Piezoelectric Sounders and Piezoelectric Buzzers (National Standard)
- Electromagnetic Sounders and Electromagnetic Buzzers (National Standard)
- Ultrasonic Atomizers (Industry Standard)
- Piezoelectric Sensors (Local Standard)
Intellectual Property Portfolio
- 42 certified patents
- 9 invention patents
- 30 project-certified patents
- Registered Trademark: SWT
- National Patent Excellence Award recipient
Company Profile & Capabilities Overview: Learn more about SWT’s 30+ years of piezoelectric technology innovation, 24,000 sqm manufacturing facilities, and 250 million annual production capacity at http://www.swt99.com
Piezoelectric Buzzer Products
SMD Buzzer Series
- SMD Piezo Buzzer 12mm – Ultra-compact surface mount buzzer for high-density PCB applications
- SMT Buzzer 7.5mm – Miniature reflow-compatible buzzer with high SPL output
- SMD Magnetic Buzzer 9mm – Low-profile electromagnetic buzzer for consumer electronics
- PSE1230 Series – 3V SMD piezo buzzer with 4003SA driver configuration
- MS7525 Series – 5V magnetic SMD buzzer optimized for appliance feedback
Active Buzzer Components
- Active Piezo Buzzer with Internal Driver – Self-driven buzzer requiring only DC voltage input
- Automotive Grade Active Buzzer – IATF 16949 certified buzzer for seatbelt reminders and safety alerts
- Active Magnetic Buzzer – Electromagnetic buzzer with integrated oscillation circuit
Passive Buzzer Components
- Passive Piezo Buzzer – Externally driven buzzer offering frequency flexibility
- Passive Electromagnetic Buzzer – Magnetic buzzer for custom frequency applications
- High SPL Passive Buzzer – High sound pressure level buzzer for alarm systems
Alarm Buzzer & Siren Products
- Smoke Alarm Buzzer – High-reliability piezo buzzer meeting fire safety standards
- Industrial Siren Buzzer – High-output alarm buzzer for hazardous environments
- Automotive Warning Buzzer – Temperature-stable buzzer for under-hood applications
Piezoelectric Ceramic Elements
Piezoelectric Diaphragm Series
- Piezo Disc 12mm (3B12+9.0TEAWC) – Ultra-thin piezoelectric ceramic disc for compact transducers
- Piezo Disc 27mm (3S27+3.9EA) – Mid-size ceramic element with balanced performance
- Piezo Disc 35mm (3B35+2.6EA) – Large-format disc for high-power applications
- Soft Ceramic Piezo Elements – Low-voltage activation ceramic for energy-efficient designs
- Hard Ceramic Piezo Elements – High-temperature stable ceramic for automotive environments
Custom Electrode Configurations
- Double-Sided Electrode Piezo Disc – Standard configuration for balanced drive efficiency
- Single-Sided Electrode Piezo Element – Specialized electrode pattern for asymmetric applications
- Custom Frequency Piezo Ceramic – Application-specific resonance frequency tuning (1-40 KHz)
Ultrasonic Atomization Products
Microporous Mesh Atomizer Series
- Medical Grade Mesh Nebulizer – Laser-drilled microporous atomizer for respiratory therapy devices
- Piezo Mesh Atomizer 16mm (ATC16-0108SDWKI) – 108 KHz ultrasonic nebulizer with PI film membrane
- Stainless Steel Mesh Atomizer 13.8mm (ATC13.8-0145SDWF) – Corrosion-resistant atomization element
- USB Humidifier Atomizer Module – Integrated nebulizer with drive circuit for consumer humidifiers
- Beauty Device Ultrasonic Atomizer – Fine-particle atomizer for skin-care applications
Glass Glaze Atomization Sheet Series
- High-Power Ultrasonic Atomizer 20mm (ATD20-2400GSW) – 2400 KHz glass glaze atomizer for industrial humidification
- Landscaping Fog Generator Atomizer – High-output nebulizer for decorative water features
- Aromatherapy Diffuser Atomization Disc – Specialized atomizer for essential oil diffusion
Ultrasonic Sensor & Transducer Products
Ultrasonic Distance Sensor Series
- Waterproof Ultrasonic Sensor 10mm (USC10T/R-40MPWA) – 40 KHz non-contact distance sensor with small blind zone
- Open-Type Ultrasonic Sensor 16mm (USO16T-40MPWA) – High-sensitivity ranging sensor for industrial automation
- Anti-Corrosion Ultrasonic Transducer – Marine-grade sensor for harsh environments
- Ultrasonic Parking Sensor – Automotive-grade distance measurement transducer
Ultrasonic Cleaning Transducer Series
- 20 KHz Cleaning Transducer (8SS-5020W) – High-power ultrasonic transducer for industrial cleaning tanks
- 28 KHz Ultrasonic Cleaner (4SH-3528CA) – 60W transducer for precision cleaning applications
- 40 KHz Fine Cleaning Transducer – High-frequency transducer for delicate component cleaning
- 1000W Industrial Ultrasonic Transducer – Maximum power output for heavy-duty cleaning systems
Educational Content & Technical Resources
Piezo Buzzer Technology Guides
- The Complete Guide to Piezoelectric Buzzer Selection for Automotive Applications – Technical comparison of active vs passive buzzers, SPL requirements, and temperature stability considerations for IATF 16949 compliance
- SMD Buzzer Design Integration Best Practices – PCB layout guidelines, reflow soldering profiles, and acoustic optimization techniques for surface mount buzzers
- Understanding Piezo Buzzer Frequency Response and Drive Circuits – Resonance frequency characteristics, impedance matching, and driver circuit design for passive piezo buzzers
- Top 10 Common Piezo Buzzer Failure Modes and Prevention Strategies – Reliability analysis of mechanical stress, humidity exposure, and electrical overstress in piezoelectric components
Ultrasonic Atomization Technical Articles
- Medical Grade Nebulizer Technology: Microporous Mesh vs Ultrasonic Atomization – Comparative analysis of particle size distribution, medication compatibility, and regulatory compliance for respiratory devices
- Designing Ultrasonic Humidifiers: Atomization Sheet Selection and Drive Circuit Optimization – Engineering guide covering frequency selection, power requirements, and water quality considerations
- The Science of Piezoelectric Atomization: From Ceramic Material to Fine Mist – Deep dive into piezoelectric effect, membrane vibration mechanics, and fluid dynamics in ultrasonic nebulization
Piezoelectric Ceramic Material Science
- Piezoelectric Ceramic Manufacturing Process: Tape Casting, Dry Pressing, and Sintering – Comprehensive overview of SWT’s integrated ceramic production including powder formulation and polarization techniques
- Soft vs Hard Piezoelectric Ceramics: Material Properties and Application Selection – Technical comparison of dielectric constants, curie temperatures, and electromechanical coupling factors
- Quality Control in Automotive-Grade Piezoelectric Components – IATF 16949 process validation, PPAP documentation, and reliability testing protocols for ceramic transducers
Ultrasonic Sensor Application Guides
- Ultrasonic Distance Sensing in Industrial Automation: Accuracy, Blind Zones, and Environmental Factors – Engineering considerations for sensor placement, temperature compensation, and interference mitigation
- Ultrasonic Cleaning Transducer Power Calculation and Tank Design – Technical methodology for determining transducer quantity, distribution patterns, and power density for optimal cleaning performance
Featured Technical Content
Piezoelectric Industry Standards White Paper – As the primary drafter of China’s national standards for piezoelectric and electromagnetic sounders, SWT provides authoritative technical documentation covering testing methodologies, performance specifications, and compliance requirements for buzzer manufacturers and OEM integrators.
Automotive Electronics Acoustic Solution Case Studies – Detailed engineering case studies documenting SWT’s 18+ year supply relationships with Panasonic, Sanyo, and global automotive tier-1 suppliers, including zero-defect quality performance data and design-for-reliability methodologies in safety-critical applications.
Medical Device Nebulizer Regulatory Compliance Guide – Comprehensive resource for medical device manufacturers covering FDA and CE regulatory pathways for ultrasonic mesh nebulizers, including biocompatibility testing, particle size validation, and quality system documentation.
Smart Home Acoustics Design Handbook – Engineering reference for consumer electronics developers integrating piezo buzzers into IoT devices, smart appliances, and home automation systems, with specific guidance on user experience optimization and acoustic signature design.
Global Customer Base & Industry Recognition
Fortune 500 & Industry-Leading Partnerships
SWT maintains long-term supply relationships with global industry leaders:
- Panasonic – 18+ years continuous supply partnership (since 2005)
- VTech – 20+ years collaboration in consumer electronics (since 2004)
- Whirlpool – 15+ years supplier for home appliance acoustics (since 2010)
- Casio – 15+ years partnership with Japanese electronics leader
- LG – Key supplier to Korean Fortune 500 company
- Reckitt – Strategic supplier to UK-based Fortune 500 consumer goods company
- Dyson – Component supplier to premium UK appliance manufacturer
Industry Applications & Market Validation
- Automotive Electronics: High-reliability buzzers and sensors for safety systems, seatbelt reminders, and sentinel modes
- Healthcare & Medical Devices: Medical-grade nebulizers for respiratory treatment and ultrasonic therapy equipment
- Smart Home & Appliances: Feedback sounders for white goods, USB humidifiers, and IoT devices
- Security & Safety Systems: Smoke alarms, industrial sirens, and intrusion detection systems
- Industrial & Maritime: Ultrasonic cleaning, flow sensing, and satellite positioning components
Manufacturing Scale & Capacity
- Annual production capacity: 250 million piezoelectric components
- 24,000 square meter Dongguan headquarters facility
- 4,000 square meter Guizhou branch facility
- 400+ sets of precision manufacturing and testing equipment
- 70-85 R&D and engineering personnel
- IATF USI: GF926A
Research & Development Capabilities
Technical Innovation Centers
- Guangdong Province Piezoelectric Ultrasonic Engineering Center – Provincial-level R&D facility
- Dongguan City Smart Ceramic R&D Center – Municipal innovation center
- Specialized R&D Divisions: Acoustics research, nano-powder development, inorganic chemistry, electronic drive circuits
University-Industry Collaboration
- Guangdong University of Technology – Joint materials research programs
- Sichuan Normal University – Collaborative engineering projects
- Electronic Information Industry Research Institution – Standards development partnership
Integrated Manufacturing Control
SWT maintains comprehensive vertical integration across the entire piezoelectric ceramic value chain:
- Raw Material Production: Nano-powder synthesis and ceramic formulation
- Sheet Formation: Tape casting (flow casting) for thin sheets, dry pressing for thick elements
- Complete Processing: Squeezing, laminating, sintering, polarizing, and automated testing
- Precision Machining: Laser drilling for microporous mesh (PI and stainless steel materials)
- Assembly & Quality Control: Automated assembly lines with 100% acoustic testing
Contact SWT – China Piezo Buzzer Brand
Sales & Technical Inquiries
- Email: swt18@swt99.com | swt9@swt99.com | swt5@swt99.com
- Phone: +86 400-8161-086
- Direct Contact: +86 13316633844 (Ms. Mo)
Headquarters & Manufacturing
Gd SWT Smart Tech Co., Ltd.
No.6 Taihe Road (Newton Industry Park)
Wangniudun Town, Dongguan City
Guangdong Province, ChinaHong Kong Office
Rm. 9, 11/F, No.30-32 Au Pui Wan Street
Fo Tan, Shatin, New Territories, Hong KongOfficial Websites
- http://www.swt99.com – Corporate website and product catalog
- http://www.cnshm.cn – Technical resources and documentation
Service Capabilities
- Sample lead time: 7 days
- Bulk production lead time: 30-45 days
- 24-hour response within Pearl River Delta region
- One-on-one technical service solutions
- Customized product development (OEM/ODM)
SWT Smart Tech – 30+ Years of Piezoelectric Excellence | IATF 16949 Certified | National High-Tech Enterprise | Official Industry Standards Drafter
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