The Hong Kong Standards And Testing Centre Ltd (STC)

We offer radio frequency and electromagnetic testing services for customers. We use high-quality equipment to test and provide precision results. Our services are professional and reliable. Providing technical support services.Assist and strengthen the product modification.To know more or enquire any specific service, please visit https://www.stc.group and fill in our enquiry form on https: www.stc.group/contact. 

Radio Frequency and Electromagnetic Testing

REC Green Technologies Co., Ltd.

iFCU™ has successfully attained the Platinum recognition in CIC Green Product Certification.iFCU™adopted the patented technology with rotor of a permanent magnet to generate magnetic flux. Its advantages are to eliminate the source of power loss and achieve a high energy efficient operation.By replacing mechanical brushes, permanent magnet motor can also minimize the noise level and waste heat generation, thus improves motor lifespan.With variable speed drive, the motor further enhances efficiency system compared to traditional fixed speed AC motor designs.Major Features:Variable speed FCU fully controllable “AUTO” mode is available in iFCU™, stepless variable fan speed is controlled based on room temperature set point. Reduce energy use while maintaining comfortable condition, e.g. unoccupied mode to maintain the minimal RPM and energy ussage. Programme Customization to fit client’s application/configuration Tailor-made programme to work with different system and fit the occasions requirements. Modbus Thermostat, Room control unit (0-10V), Group Control, RPM adjustment &amp; wireless group control etc. Duct type sensor Installed in return-air box to control temperature accuracy up to ± 0.5oC to increase human comfort. Both high &amp; low static Applicable to both high &amp; low static pressure setting. Wi-Fi Control Can be controlled through any mobile device. 

iFCU™ Intelligent Fan Coil Unit (EC Motor / BLDC Motor / PM Motor)

STC offer Electromagnetic Compatibility (EMC) Testing services for medical devices such as: Medical Electrical EquipmentIn Vitro Diagnosis (IVD) Medical EquipmentElectromagnetic Compatibility Testing (EMC) IEC / EN 60601-1-2CISPR 11 / EN 55011IEC / EN 61326-1IEC / EN 61326-2-6FCC Part 15 / Part 18ICES-001 / ICES-003 Radio Frequency Testing (RF) EN 300330-1; EN 300330-2 (9 kHz to 30 MHz)EN 300220-1; EN 300220-2 (25 MHz to 1000 MHz)EN 300440-1; EN 300440-2 (1 GHz to 40 GHz)FCC Part 15 / Part 18; RSS-210Bluetooth EN 300328 (2.4 GHz)FCC Part 15 / Part 18RSS-247Wi-Fi EN 300328 (2.4 GHz TRx WiFi b / g / n)EN 301893 (5.8 GHz)FCC Part 15 / Part 18RSS-247If you have any further question, please feel free contact us or visit our website: https://www.stc.group/en/contacTo know more or enquire any specific service, please visit https://www.stc.group and fill in our enquiry form on https: www.stc.group/contact.  

Electromagnetic Compatibility for Medical Devices

Drawing on a complete understanding of government regulations and policy that apply to electrical and electronics industry, STC can help you to test Radio Frequency (RF) and ElectroMagnetic Compatibility (EMC) in accordance with various international standards.  EMC Tests for R&amp;TTE: 27 MHz Remote controlled Transmitter and Receiver27 MHz Walkie Talkie40 MHz Remote controlled Transmitter and Receiver433MHz Remote controlled Transmitter and Receiver868MHz Remote controlled Transmitter and Receiver2.4GHz Remote controlled Transmitter and ReceiverTo know more or enquire any specific service, please visit https://www.stc.group and fill in our enquiry form on https: www.stc.group/contact. 

EMC Tests for R&TTE

With over 50 years of experience, STC has been a leader in EMC testing and is a&nbsp;Local Certified Body (LCB) under the&nbsp;Office of the Communications Authority (OFCA)&nbsp;of the Hong Kong Government. Our state-of-the-art laboratory, RF and EMC testing chambers allow for ElectroMagnetic Interference (EMI) and ElectroMagnetic Susceptibility (EMS) testing, as well as RF testing for radio frequency products.

STC&rsquo;s EMC testing and RF testing capabilities are recognized and comply with internationally standards to help manufacturers, retailers and importers meet regulatory requirements and quickly get products to international markets.

  Radio Frequency (RF)&nbsp;Testing   	 American RF Standards&nbsp;(ANSI C63.10, 47 CFR Part 15) 	 Australian RF Standard&nbsp;(AS/NZS 4268) 	 Canadian RF Standards&nbsp;(RSS-Gen, RSS-210, RSS-220, RSS-222, RSS-247, RSS-310) 	 European RF Standards&nbsp;(EN 300086, EN 300113, EN 300220, EN 300296, EN 300328,EN 300330, EN 300390, EN 300422, EN 300440,&nbsp;EN 301166, EN 301178, EN 301357, EN 301559,&nbsp;EN 301893,EN 302018,&nbsp;EN 302065, EN 302195,&nbsp;EN 302208, EN 302502, EN 302536, EN 302608, EN 302609, EN 303203, EN 303204, EN 303406,EN 303354) 	 Hong Kong Radio Specifications&nbsp;(HKCA 10XX)  If you have any further question, please feel free contact us at&nbsp; enquiry@stc.group &nbsp;or visit our website:&nbsp; https://www.stc.group/en/contact 

Radio Frequency (RF) Testing

e-health therapy limited

Enhanced External Counterpulsation (EECP) is a non-invasive, outpatient treatment for chronic stable angina that FDA-approved to improve blood flow to the heart. It uses pressure cuffs on the legs to act as a "natural bypass," boosting coronary blood flow during rest. Treatment typically involves 35 one-hour sessions over 7 weeks.   

Enhanced External Counterpulsation (EECP) for 45min treatment

Assisi International Co Ltd

Plasma Air Purifying Technology Plasma tube has long life span up to 20,000 hours等离子管使用壽命長達 20,000 小時No/less consumables, in line with the "General Hygiene Requirements for Air Disinfection Machines" issued by the National Health Commission WS/T648-2019" requirements: The plasma air disinfection machine shall not be equipped with medium or high efficiency filters, and there is no need to replace consumables later. 無/少耗材 符合國家衛健委發布的《空氣消毒機通用衛生要求 WS/T648-2019》的要求:等離子空氣消毒機內部不得裝有中、高效 過濾器，後期無需更換耗材2-5W/hour/module tube 等離子管耗電量只有2-5W/小時Assuming that the PAU (fresh air blower) consumes 200W per hour, installing our system can reduce the usage rate by 3%, that is, it can save 6W per hour and 25.92kW per year, which is equivalent to 2x 5-meter-high trees carbon absorption 假設PAU（（空氣處理機組））每小時耗電200W，安裝我們的系統可降低3%的使用率，即每小時可節省6W，每年可節省25.92kW，相當於2x 5米-高樹碳吸收

Plasma Air Purifying technology

Propagation Systems Limited

Propagation offers not just only the design service but also the hardware modules for different application. The qualified modules are suitable for the OEM services as well as the system design. Our OEM partners are located in both Southern part of China and Northern part of Vietnam in over 20 years manufacturing experience.   matter® Connected Things  – Border Router and End NodeBluetooth® Low Energy     – Bluetooth version 5.3Classical Bluetooth® Audio  – customized Bluetooth audio in both DSP and applicationEmbedded WiFi®           – bundle solution with Amazon Wed ServiceUltra Wide Band (UWB)      – RTLS applicationSigfox®/ LoRa®            – Long range transmission up to 1.5km Hardware Design service: Because of our electronics and electrical background, we also provide the hardware design service based in Hong Kong. Propagation completed over 120 projects in the last 10 years.  Application BoardIOT deviceEmbedded Linux / Android Development

Hardware Development

AT-Vibe Technology Limited

Care 24 Hrs Elderly Health &amp; SafetySmart Monitoring System - AUTO SOS Instant AlertMulti-Channel Notification - Privacy Protection No Cam No Worry Suitable for bathroom, toilet, kitchen,balcony, living room, hallway, staircase... - High Accuracy Fall Detection Not affected by environmental factorssuch as light, temperture, humidity... - User-friendly Safe Frequency Wireless, Touchless, No Physical Restraint Easy Installation No Extra Manpower Increase Safety and Efficiency 

Inno-health Care

V-Trust Inspection Service Co., Ltd

Wide Expertise in the Home Audio &amp; Speakers Industry  V-Trust's inspection services for home audio and speakers provide essential support to buyers, ensuring that products meet customer specifications and quality standards.  Whether it’s home audio systems or standalone speakers, V-Trust’s inspection process carefully examines product integrity, appearance, and build quality to ensure there are no defects like scratches, dents, or loose parts. Functionality checks focus on sound quality, speaker sensitivity, battery performance, and power output, along with total harmonic distortion (THD) and frequency range. Additional tests cover connectivity, including wired and wireless options, Bluetooth pairing, multi-device compatibility and other tests to confirm product reliability.  V-Trust helps buyers minimize risks and avoid costly issues by providing detailed inspection reports, complete with photographic evidence, available within 6 to 24 hours after the inspection.  Why V-Trust  ✔ Full-Time Inspectors Only: We do not hire part-time QC staff or outsource to other firms. This approach serves as a key anti-bribery measure and ensures the highest level of reliability in our inspection reports. ✔ Diverse Product Range: Our team covers a wide range of product categories, including electronics, electrical products, lighting, building materials, furniture, home décor, kitchenware, textiles, apparel, and industrial goods. ✔ 2,500+ Checklists: We offer comprehensive checklists for various product lines, drawing on our extensive QC experience. ✔ Online Booking: Easily book services through our advanced online system, and access inspection results and supply chain statistics via the QC dashboard. ✔ Quick and Efficient Service: Receive same-day quotations, with reports available 6 to 24 hours after inspection. We also offer free laboratory testing and regulatory consultations.  About V-Trust  V-Trust is the largest product inspection company in Asia, employing only full-time inspectors. With over 600 staff across 10 Asian countries, we conduct more than 110,000 inspections and audits annually, serving over 13,000 buyers worldwide.  We are experts in the quality control industry, offering a wide range of cost-effective services, including product inspections, factory audits, laboratory testing, and product certification.  V-Trust operates in China and key export markets such as India, Vietnam, Malaysia, Thailand, Bangladesh, Pakistan, Cambodia, Indonesia, and Myanmar.  For more information, please contact us:Website: www.v-trust.com 

Home Audio & Speakers Product Inspection

GPTBots Hong Kong Limited

Intelligent and Accurate AppPush NotificationEngageLab push notification service enables SDK integration in 3 minutes, utilizing intelligent and accurate push notifications that improve user engagement and retention. Achieve High Delivery RatesEngageLab's push notification solution and service supports not only Firebase Cloud Messaging (FCM) and Apple Push Notification Service (APN) channels, but also enterprise self-built messaging channels, as well as messaging channels from mobile brands such as Xiaomi, Huawei, OPPO, VIVO, Meizu and Honor. With this comprehensive coverage, enterprises can effectively reach global users—achieving message delivery rates as high as 99%. Diverse Notification FormatsEngageLab Push delivers enterprise-grade engagement through 8+ interactive formats (banners, pop-ups, rich media) with images, action buttons, and deep links. Patented delivery channels bypass notification restrictions via in-app fallback systems and behavior-triggered messaging, while iOS Lock Screen Live Activities enable real-time updates (e.g. food delivery tracking). Proven to boost CTR by 30%+ through foreground message optimization across all user scenarios. Identify the Right AudiencePush Notification Service delivers targeted and personalized notifications based on user aliases, tags, devices, and user segmentation to effectively improve click-through rates. Complete Data AnalysisEngageLab provides complete data analysis across the message lifecycle, including message funnel analysis and platform/channel-specific loss analysis, statistics on new users, active users, app uninstallations, notification enablement/disablement, delivery rates, click-through rates, and other follow-up analysis to help developers improve the reach of their apps. EngageLab optimizes mobile push based on your customer lifecycle. Data Security AssuranceGlobal Compliance Deployment:Select local data centers by region to ensure cross-border data storage compliance.Secure Data Transmission:Full-link encryption protects sensitive data, disabling plaintext transfers and debug log exposure.Enterprise Security Controls:Enforce IP whitelisting, role-based permissions, content filters, and message recall systems.Professional Enterprise ServicesSmart Cost Optimization:Pay-as-you-go billing by DAU/push volume with auto-saving features: invalid push interception, built-in cost forecasting, and 30%+ hidden cost reduction through intelligent tag storage.Secure Business Governance:Granular role-based access (admin/operations/dev) with full audit trails. Isolate multinational data via region/business-specific AppKey configurations.Precision Testing Hub:Simulate push scenarios with pre-launch validation for message formats, redirect logic, and multi-device compatibility.

EngageLab AppPush

Svi Public Co Ltd

Electronic manufacturing service, start from PCBA to Final Assembly. Factories located in Thailand, Austria, Slovakia and Hungary. 	 Audio 	 Medical 	 Telecommunication 	 Industrial 	 Transportation 	 etc.,  

Electronic Manufacturing Service - Audio Equipment

Hanhong Digital Technology Co., Limited

With the talented in house designer and the strongest R&amp;D team which leads Hanhong to create the unique and excellent products to worldwide clients, all of our products have our private toolings with design patented, we are expert in making some difference whether on the designs or the acoustic technology so as to bring the good branding value for our customers. Also we have strongest R&amp;D team including the electronic engineers, mechanical engineers, acoustic engineer and software developing engineers who assure the enough capacity of doing customized ODM projects with our customers. 

OEM / ODM FACTORY

Centre For Perceptual And Interactive Intelligence (CPII) Ltd

This technology aims at empowering the functionality of conventional augmentative and alternative communication (AAC) applications with language AI. By using this AAC technology, people having communication disabilities can overcome their difficulties and conduct daily communication. This application is definitely improving their daily lives and enhance social inclusion.  

Smart Augmentative and Alternative Communication

Promised Land Management Limited

Skin Firming &amp; Lifting Scientifically Proven: Multi-Dimensional Aesthetic Enhancement Smoother Texture &amp; Touch: Clinical studies show that after 12 systematic sessions, participants experienced up to 93%* visible improvement in the smoothness of cellulite (orange-peel skin).Restored Skin Density: Through natural activation of fibroblasts, after 12 sessions, 92%* of participants reported significant improvement in skin firmness, effectively tightening and optimising loose contours.Immediate Decompression &amp; Lightness: Participants reported an average 50%* reduction in leg fatigue and heaviness sensation after the first session.Refined Local Contours: Combined with overall metabolic optimisation, after 12 sessions, participants observed a localised circumference reduction of up to 5.8 cm* (e.g., waist circumference).*Note: All data cited from the 2024 BeScored clinical study report. The figures demonstrate the physiological responses of the technology. Individual results may vary depending on constitution, age, and lifestyle habits. Non-Invasive Cellular Activation Aesthetics Why does skin lose its elasticity? Skin aging is not only due to natural factors but is also closely related to photoaging, life stress, and slowed circulation. The key cells responsible for maintaining elasticity — fibroblasts — produce less collagen and elastin over time, leading to sagging and visible texture changes.BTO’s “Natural Activation” Philosophy: Our patented physical stimulation technology does not rely on external fillers. Instead, it uses unique mechanical energy to perform “cellular fitness” on deep tissues. This naturally activates fibroblast activity, encouraging the production of endogenous collagen and hyaluronic acid.This approach is traceless, requires no downtime, and aims to reboot the skin’s self-healing cycle, helping maintain long-lasting youthful texture and firmness.

Skin Firming & Lifting

Aska Technology Ltd

Aska Electric Remote Water Meter has non-magnetic signal acquisition, water measurement and storage, easy networking, remote data transmission and other functions. The management center can read real-time data. After a long term research and experiment the subordinate count gear box was removed to reduce wear and rotational resistance to extend mechanical life. The signal is durable and reliable through non-magnetic technology. Our Water Meter is a High-accuracy of independent impeller rotating on non-metallic bearing is stable non-magnetic signal response technology.
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Basic model of Hamic has the non-magnetic electronic remote water meter and the convenient networking. High-efficiency, convenient, and quick data capture, wireless data transmission, management center can achieve real-time data acquisition, and provide guarantees for realizing the ladder price policy.
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Measuring Range Ratios
With 5L/h start-up flow rate, electronic tracking compensation technology can be used, and the range ratio can reach to R250.
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Long Life
In the traditional mechanical water meter, removed short life and complicated plastic gear transmission parts, it will affect accuracy. So change the highly wearable bearing parts into highly wear-resistant ceramics. This will double the flow stability and service life of the flowmeter.
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Low Power Consumption
Using the latest low-power technology, the average operating current is less than 20 microamperes to ensure a cumulative use of a battery for 10 years.
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High Measurement Accuracy
Using a special algorithm and a large amount of experimental data, the measurement sensitivity can reach 0.01 ml.
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Super Anti-interference function
The signal is picked up non-magnetically. Resists strong magnet interference from the outside
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Remote Reading
Support remote M-BUS reading and inspection.
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Remote Transmission Reliable &amp; Security
The Remote Transmission Optical isolation design can support the unlimited real-time meter reading. Fight against strong magnetic, strong electricity and lightning interference
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High Level Protection
The circuit box using inside and outside isobaric technology to protect the water meter and reach to IP68 protection level. &nbsp;
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Intelligent Platform
The real-time measurement of various functions such as step water price, remote transmission of M-BUS information, storage of large-capacity information, remote meter operation self-check, and remote monitoring.
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Easy to Maintain
The circuit box, battery, and flow meter form a detachable structure that supports on-site replacement of parts and batteries.

Remote Automatic Water Meter Reading System

iWave, Inc.

 This ACE plus fraud detection system is especially designed and made for credit cards. The real-time monitoring system provides close and quick analysis and supervision. The Web-based system is highly compatible with different computer operation systems. 
 
  With data-analysis and learning function. 
  Precise evaluation and simulation. 
 

Fraud Detection System

Dreamcare Solution

The problem of spectrum and interference has been challenging for radio engineers and operators worldwide, and it will continue to be for quite some time particularly in high-density wireless areas. As is known, licenses for spectrum cost millions of dollars for network operators worldwide. Even a 10-30% improvement is significant and has great commercial potential. Spectrum Equalibrizor, SE, provides high spectrum efficiency and prevents interference for network operators in commercial venues, hospitals, airports, universities and hotels. Furthermore, operator engineering would get direct benefits from the programmable platform for any capacity upgrade and performance management without any hardware re-settlement.
 
  Programmable radio spectrum. 
  Optimization solution for high-density wireless deployment. 
 

Spectrum Equalibrizor Technology

Leotek Co., Ltd.

This automatic telemetering system (AMR/AMI) is designed by our experienced team. After dividing the metering area into small/middle/large blocks, the system installed with a&nbsp;remote concentrator secures the metering data of the remote collector and remote relay installed in the target meter. And then the central center collects the metering data through mobile communication.
 
  Professional solution. 
  Other services are available. 
 

Automatic Telemetering System

Nuthon IT Solutions Limited

 We provide app development service for customers from different fields. The professional skills enable the apps to run smoothly and stably on various systems. With a dedicated team, we promise you excellent service and competitive price. 
 
  Ultrasound data transfer. 
  Indoor positioning. 
 

App Development

ChangZhou ShengHui Electronic Co.,Ltd.

These are a series of versatile electronic acoustic components for audio visual use. Our pledge to pursue high quality ensures that these products will fulfill your needs. All components are small and handy, allowing them to fit snugly into any component niche.
    TUV approved  Rohs certified  All purpose use  

Micro Speakers and Receivers

MET Laboratories Inc

ALT/HASS is one of industry's more widely accepted means of determining reliability of a product through accelerated reliability testing. The twin main stresses employed during HALT/ HASS are rapid temperature transitions and random vibration. This double dose of extreme exposure will reveal defects most likely to occur in the field, in real life application.
 
  Quickly discovers design and process flaws. 
  Evaluates and improves design margins. 
  Reduces development time and cost. 
  Eliminates design problems before releasing to manufacturing. 
  Ships a mature product at market introduction. 
  Uses as a sustaining engineering tool to evaluate the impact of product modifications and cost reductions. 
  Reduces claims under your product warranty. 
 

HALT/HASS Testing

Stride International Co., Ltd.

The satellite finder features&nbsp;high sensitivity&nbsp;for easy&nbsp;detection of&nbsp;the satellite signal. This satellite finder displays signal strength&nbsp;with an easy-to-read analog needle, allowing&nbsp;one to make necessary adjustment of satellite dish without having to yell back and forth from the window.&nbsp;

 
  Operating frequency: 950-2,105MHz. 
  Input level: 25dBm-75dBm. 
  Power: 13/18VDC. 
 

Satellite Finder

Delta Ind'l Resources Ltd

Non-Contact Digital Infrared Thermometers design/manufacturingMedical purpose and Industrial Purpose Infrared Household Thermometer.Big LED screen with green color for easy reading.Non-touch design, safer for use.High-temperature Alert.

My Sourcing