Company Profile

Established in 1980, SHENZHEN QIAOHUA INDUSTRIES LIMITED has become one of the largest manufacturers of wireless doorbells and video intercoms in China.

Today, we have founded 2 factories with about 82,000 square meters land area and 104,000 square meters floor space. All our 24 production lines and the whole production process strictly adhere to the ISO 9001: 2008 Quality Control Systems, and our products honor CE, GS, RoHS, R&TTE, FCC and UL certificates. 100% of our products’ quality is strictly controlled and tested by our equipments, such as RoHS scanner, spectrum analyzer, high & low temperature tester. We attach importance to new products research and development with annual investment USD15 millions. We can develop mold and PCB in-house, as well as plastic injection. Therefore, we can customize new product according to customer's demand in a short time, within 10 to 40 days.

Products History

  • TV Antennas

  • Wired Doorbells, Audio Door Phones

  • Mechanical Doorbells

  • Wireless Doorbells

  • AV Selector

  • RF Modulator

  • Anti-thief PIR Alarms

  • CE Compliant Wireless Doorbells

  • Infrared Extenders
    Wireless AV Transmitters

  • Multi-switch Wireless Doorbells

  • 2 Wires Audio Intercoms 4 Wires Video Door Phones

  • 2 Wires Video Door Phones
    Auto-learning Code Doorbells

  • Hi-quality Sound Doorbell
    Apartment Video Door Phones

  • 2010 Wireless Audio Intercoms
    200M Wireless Doorbells

  • 2.4G Wireless Video Intercoms
    Front Door and Back Door Doorbells

  • 2012 MP3 Doorbells, Recordable Doorbells
    IP Intercoms for Villa

  • Bluetooth Doorbells
    IP Intercoms for High Building

  • Doorbell and Alarm Combinator

  • WIFI Video Doorbells

R&D

5% Annual Revenue Invested on R&D
We highlight the new products research and development by investing around USD1,200,000 annually. With strong design and R&D capacity, 3 new products on average are launched every month.

Advanced Test Equipments
Advanced equipments, such as EDXRF Spectrometer, Network Analyzer, Spectrum Analyzer, are set up to facilitate the R&D tests and experiments. At present, totally we have 3 signal generators (HP brand), 1 digital mobile radio transmitter tester (spectrum analyzer, Anritsu brand), 1 oscilloscope (Jingce brand), 1 two channel digital storage oscilloscope (Tektronix brand), 6 net analyzer (Agilent Technologies / HP brand), 2 signal source (Agilent Technologies brand), 1 spectrum analyzer (Agilent Technologies brand).

Professional R&D Team
Our R&D team is composed of 22 professional engineers. Most of them have been working for Quhwa for more than 10 years. This team created the earliest 200M doorbell PCB under CE & FCC compliance, the original self-learning code doorbell, video door phone compatible with finger-print unlocking function, room-to-room communication apartment video door phone system, keypad outdoor camera with ID unlocking function.. and so on. All the technology launched by Quhwa has been leading the industry and attracted attention even from the world’s top 500 companies. The well-designed PCB and product structure ensure high efficient production at least cost, but good quality.