GRG METROLOGY & TEST GROUP CO., LTD.

GRGTEST has been deeply involved in the automotive field and has established a complete industrial chain testing and verification capability from materials to complete vehicles. Focusing on the technological evolution requirements of intelligent connected and new energy vehicles, GRGTESTcontinuously improves its core testing capabilities to ensure the technological iteration and product innovation of industry enterprises. 

Vehicle-mounted Electronic Product Testing

Refined Motor Company Limited

Refined Motor Co. is a Hong Kong automotive EV technology provider offering certified electric conversion systems, technical expertise and regulatory support to industry partners. With in-house patented modular powertrain technology and full government compliance accreditation, the company enables automotive workshops, restoration studios and trade partners to deliver professional, road-legal EV conversion services without extensive in-house EV research and development.Our partnered electric conversion programme is a collaborative B2B service designed for automotive workshops, vehicle restoration companies, car dealers and automotive industry partners looking to expand their service portfolio into certified EV retrofitting. Under this partnership model, Refined Motor Co supplies fully developed, tried-and-tested modular electric powertrain kits, standardised engineering blueprints, technical guidelines and step-by-step conversion protocols to partner businesses. We provide continuous technical consultation, system calibration support and regulatory compliance guidance throughout every project stage.Partner teams manage vehicle disassembly, body preparation and mechanical assembly, while our professional engineering team oversees critical system integration, safety validation, quality assurance testing and final government certification approval. This cooperative framework allows industry partners to launch legitimate, market-ready EV conversion services with reduced risk, lower development costs and faster project lead times. We maintain consistent quality control, standardised safety benchmarks and full regulatory traceability, helping partners build a reputable and compliant EV service offering for local and regional clients. 

Partnered Electric Conversion

Eurofins MTS Consumer Product Testing Hong Kong Limited  

Examples of automotive test we offer: 	 ELV (End-of-Life Vehicle)	 		 EU ELV: 20+ local automakers plan exporting to EU/US 		 Chinese ELV: GB/T 30512-2014 &lt;Requirements for Prohibited Substance onAutomobiles&gt; 	 	 	 FMVSS 302 (Federal Motor Vehicle Safety Standard	 		 Flammability of Interior Material 	 	 	 VOCs (Volatile Organic Compounds)	 		 Volunteer standards by all automakers 		 Chinese National Standard: GB/T 27630-2011 &lt;Guideline for Air Quality Assessment of Passenger Car&gt; 	 	 	 GADSL (Global Automotive Declarable Substance List	 		 Targeting certain substances in automotive products throughout the supply chain 	 	  

Automotive Testing

Great O'Bay Limited

Advanced Electroplating Production Technology  The group's production facilities are located in Foshan and Qingyuan, Guangdong Province, China, focusing on providing exceptional services throughout Asia. Our plants utilize advanced Electroplating production technologies, ensuring high product quality and low carbon emissions. We are dedicated to the innovative application of recycled metal materials, transforming these materials into high-performance products. By closely integrating research and development with production, we effectively advance the implementation of green technology solutions, promoting sustainable development.  With 30 years of experience in manufacturing parts across the automotive, electrical, and furniture sectors, we are committed to providing environmentally friendly, durable, and competitively valued solutions for automobile parts, electronic products, and furniture through continuous innovation and the implementation of green manufacturing processes.  We hold multiple professional certifications, including pollutant discharge permits, ISO 9001:2015 Quality Management System Certification, IATF 16949 Automotive Quality Management System Certification, ISO 14001 Environmental Management System Certification, and various utility model and invention patents.  We collaborate with several well-known brands, including GAC, Honda, Toyota, Volkswagen, Mitsubishi, Fiat, as well as Midea and Galanz. The professionalism and technical strength of our group enable us to successfully apply innovative recycled metal materials across various industries, including aluminum alloys, stainless steel, nickel, and copper. These materials effectively replace traditional new materials, lowering manufacturing costs while enhancing product performance and environmental sustainability.  

Advanced Electroplating Production Technology

HENGYANG YINBEI WATCH CO., LTD

mechanic movement One-stop Service from Design to Production 

 	 Examples of automotive test we offer: ELV (End-of-Life Vehicle) EU ELV: 20+ local automakers plan exporting to EU/US Chinese ELV: GB/T 30512-2014 Requirements for Prohibited Substance on Automobiles FMVSS 302 (Federal Motor Vehicle Safety Standard) Flammability of Interior Material VOCs (Volatile Organic Compounds) Volunteer standards by all automakers&nbsp; 	 Chinese National Standard: GB/T 27630-2011 Guideline for Air Quality Assessment of Passenger Car GADSL (Global Automotive Declarable Substance List) Targeting certain substances in automotive products throughout the supply chain  

Refined Motor Co. is a Hong Kong-based, Transport Department recognised EV engineering firm specialising in road-legal vehicle electrification, retrofitting and compliance-certified automotive innovation. Founded by professional automotive engineers, the company delivers precision-engineered, fully certified electric vehicle conversion solutions for private collectors, premium vehicle owners and discerning automotive clients across Hong Kong and the Greater Bay Area.Our bespoke electric conversion service offers fully customised, one-of-a-kind EV retrofitting tailored exclusively for classic cars, vintage vehicles and special-interest automobiles. Unlike standard off-the-shelf conversions, every project begins with a complete vehicle structural analysis, chassis evaluation and usage requirement assessment to design a fully personalised electric powertrain, battery layout and driving performance profile. Our engineering team custom-tunes acceleration, torque output, range characteristics and weight distribution to align with the owner’s driving style, aesthetic expectations and intended use, whether for daily road use, show display or long-term collection preservation.The full-service process includes custom CAD engineering design, precision component integration, system calibration, comprehensive road and safety testing, as well as complete Hong Kong regulatory documentation and official road-legal certification. We fully preserve the vehicle’s original bodywork, classic styling and interior heritage while completely replacing the traditional combustion drivetrain with modern, zero-emission, reliable electric technology. This premium tailor-made solution is ideal for classic car enthusiasts and private clients seeking unique, high-quality, legally compliant electric classic vehicles with personalised performance characteristics.

Bespoke Electric Conversion

Gordon C & Co Ltd

RESEARCH AND SOURCINGGordon C pioneers and innovates coatings, treatments, and material usage, when needed, to ensuring each project’s successful completion. 

OEM RESEARCH AND SOURCING

Refined Motor Co. is a Hong Kong premium classic vehicle restoration and electrification specialist, combining professional heritage vehicle craftsmanship with advanced EV engineering technology. Fully certified under local transport regulations, the company seamlessly merges high-standard vintage vehicle restoration with modern zero-emission electric powertrain retrofitting for classic car collectors and heritage vehicle preservation projects.Our restoration electric conversionservice uniquely integrates full classic vehicle restoration with precision EV retrofitting, designed for vintage, antique and heritage vehicles requiring both aesthetic heritage preservation and modern electric performance. Our restoration team meticulously refurbishes original body panels, exterior finishes, interior trim and vintage mechanical components to either roadworthy or concours show standards, fully reviving the vehicle’s original historical appearance and authentic classic character.Parallel to the restoration process, our EV engineering team integrates perfectly matched modular electric powertrain systems, ensuring the new electric drivetrain complements the vehicle’s restored structure, weight balance and classic driving feel. We synchronise restoration timelines with EV system installation to protect original heritage parts, avoid unnecessary modifications and preserve the vehicle’s historical value. Every completed project undergoes full safety testing, system calibration and official Hong Kong transport certification, delivering fully road-legal, zero-emission classic vehicles that retain timeless vintage aesthetics while offering reliable, clean and modern electric driving performance. 

Restoration Electric Conversion

Time Grand Limited

Efficient after-sales support for watch brand customers. After sales service is a must for any watch brand business. Our in-house repair service and parts department have been created to support our customers needs with high efficiency turnaround.   

Aftercare Service · Parts · Fulfillment

GRGTEST：a Comprehensive Provider of Full-chain Quality Technology Solutions Metrology and testing, product certification, standards development, scientific research and innovation, and tool development. Its core business spans key industrial sectors, including equipment manufacturing, aerospace, intelligent connected vehicles, semiconductors and integrated circuits, digital economy, and life sciences. 

One-stop technical services

Refined Motor Co. is a Hong Kong ESG-focused automotive technology enterprise specialising in compliant, cost-effective fleet electrification solutions. With strong expertise in commercial vehicle engineering and government-approved EV retrofitting standards, the company helps corporate fleet operators, logistics companies and institutional organisations modernise existing vehicle fleets, reduce carbon emissions and lower long-term operational costs.Our fleet electric conversion service is a professional turnkey electrification solution engineered specifically for light commercial vehicle fleets, including service vans, delivery vehicles, shuttle vehicles and operational fleet cars. We conduct comprehensive pre-project fleet feasibility audits, analysing vehicle usage patterns, daily mileage requirements, payload limits and operational duty cycles to design optimised, fleet-specific electric powertrain and battery configurations. Each conversion setup is calibrated to maximise operational range, improve load efficiency and ensure long-term durability under frequent commercial use.The service includes standardised high-volume conversion workflows, unified safety testing procedures, full regulatory certification, fleet-wide performance validation and structured after-sales maintenance support. By retrofitting existing combustion fleets into zero-emission electric vehicles, fleet owners avoid costly full vehicle replacement cycles while achieving ESG carbon reduction targets, lowering fuel expenses and reducing ongoing mechanical maintenance costs. We deliver consistent, scalable, fully road-legal fleet electrification projects ideal for corporate sustainability upgrades and government green transport compliance requirements. 

Fleet Electric Conversion

ENGINEERING ELEGANCEGordon C offers a one-stop solution to transform ideas into reality, seamlessly. Our engineers take ideas from intricate 2D, 3D, and STL drawings to the prototyping stage in a rapid fashion. 

OEM ENGINEERING SUPPORT

Development of components that meet both technical and aesthetic standards. Through comprehensive research, engineering and manufacturing support, we help transform watch concepts into market-ready products. Our team develops and refines watch components and constructions to ensure they meet technical requirements, aesthetic expectations and production standards, supporting reliable quality, functionality and design excellence throughout the manufacturing process.   

RND · Engineering · Production 

Dongguan Longmax Industries Ltd.

As part of our turnkey manufacturing solutions, Longmax provides custom and insert-molded products for household, medical, automotive, and consumer electronics applications. With over three decades of expertise, we specialize in the design and manufacture of complex precision components and assemblies, particularly for the global automotive industry. Our facility combines state-of-the-art equipment with advanced production technologies and a team of skilled engineers and technicians experienced in all phases of insert and plastic injection molding. Key highlights include advanced CAD design and manufacturing, tool and die-making capabilities, modern quality assurance testing, and a fully staffed in-house tool room with journeyman mold makers dedicated to maintenance and repair. Our services:Product Evaluation &amp; DFM Analysis: Engineers analyze part design and use mold flow simulation to optimize gate placement and catch defects early. Mold Design Engineering: Core/cavity layouts, cooling channels, and ejection systems are engineered to ensure cycle efficiency and long-term production stability. Tool Steel Selection: Materials like P20, NAK80, or S136 steel are chosen based on required durability, wear resistance, and production volume. Advanced CNC Machining: Multi-axis milling, high-speed machining, and EDM (Electrical Discharge Machining) create intricate features with extreme precision. Heat Treatment &amp; Hardening: Applied to high-volume production molds to increase strength, wear resistance, and operational lifespan. Surface Finishing &amp; Polishing: Custom finishes—such as mirror polishing, texturing, or bead blasting—are applied to achieve required aesthetics. Mold Assembly &amp; Validation: Components are assembled for trial runs (T1 samples) to test dimensions, cycle times, and ejection before full production. 

Precision Mold Making

A And P Productions Ltd

we can provide one stop service from OEM and sourcing items under our customer need. please contact us for more information 

 we can provide your own design and OEM project or sourcing business for our customer 

SGS HK Ltd

Developing the highest quality electrical and electronic (E&amp;E) goods that are safe and energy efficient is a complex challenge in today’s competitive market. Our holistic Total Solution Services for E&amp;E products, delivered through our global network of accredited testing laboratories, ensure manufacturers and retailers have access to expert support at every stage of the product life cycle – from design, production and regulatory compliance to the import and export of goods. Our services include:   We understand regulations and standards for every product and target market, and we can help you reduce risk, improve efficiency and ensure compliance. Our experts can help you to incorporate critical construction criteria and compliance requirements from the design stage to the end of the product life cycle. Our Total Solution Services enhance market access and encourage growth. 

Electrical & Electronic Products: Total Solution Services

Information Processing Consultants Ltd

Our factory can help customer to make non-standard parts using our CNC milling and lathe machineries. As these are non-standard parts, customers need to supply CAD files for quoting of the cost involved. Materials can be aluminium 5052/6061, alloy steel 202'304//316, or plastics ABS/PE etc. 

Non-standard Part Making

Svi Public Co Ltd

Electronic Manufacturing Service
Our industry focus includes industrial products, high end telecommunications, office automation, professional audio and video products, automotive electronics, medical devices, etc. The advanced solutions are sure to keep you on the cutting edge.

Electronic Manufacturing Service

The Hong Kong Standards And Testing Centre Ltd (STC)

 The center can test and certify most products in its modern laboratories to make sure that they meet the essential safety, quality, reliability and performance requirements. STC's qualified inspectors can verify a manufacturing facility's capability, inspect products at the factory before shipment and certify manufactured goods are in compliance with contract specifications. The center's experienced professionals can advise manufacturers and trading organizations on how to improve their products and achieve international quality, environmental and social objectives.Shoe lace strength: Dry test, Wet test.Dry test after pre-wetting (leather only).Breaking force and extension at break of shoe laces.Attachment strength of shoe lace tags.Zipper strength.Lateral strength of slide fasteners.Strength of slide fastener pullers.Attachment strength of slide fastener and stops.Slider locking strength of slide fasteners.Slide fastener burst strength.Breaking force of buckles.Three point bending test.Strength of straps, buckles, lace hole, eyelets or D-ring and related attachments:Strength of eyelet facings and D ring.Strength of eyelet attachment in footwear.Strength of fastened buckles.Strength of buckle and strap attachment.Salt water corrosion.Shear strength of hook-and-loop fastener (before and after 5000 cycles fatigue test).Peeling strength of hook-and-loop fastener (before and after 5000 cycles fatigue test).Knot slippage test.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. 

Test for Footwear Accessory

Yongjun Trading (Hong Kong) Co., Limited

OEM manufacture factory 

HONG KONG WATCH MFRS ASSOCIATION LTD

The Hong Kong Watch Manufacturers Association Limited (HKWMA) is an organization in Hong Kong. It provides a wide range of activities and services for its members.
   To organize, co-organize and sponsor in major local and overseas exhibitions.   To help members promote their products and fight for privilege discounts.   To organize watch and clock seminars and training courses to enhance members' knowledge in management, control, quality and technology.   To organize overseas study missions and delegation in order to establish and strengthen contacts with overseas counterparts, and to promote the exchange of information and experience.  

Association Service for Watch Manufacturers

One-stop OEM &amp; ODM Watch Development Solutions From concept to production: integrated support for watch brands. Time Grand provides one-stop OEM and ODM watch development solutions for watch brands seeking reliable support across product development, engineering, design, manufacturing and post-production service needs. What the solution covers: R&amp;D, engineering and productionDevelopment of watch components and constructions that meet both technical and aesthetic standards, supported by research, engineering and manufacturing expertise.ODM / OEM consultation and designTailor-made analyses to align with brand identity, market trends, niche target audiences and pricing strategies, supported by sketches, artistic drawings, 2D/3D renderings, 3D prints, animations and fully functional samples.Manufacturing and assembly resourcesCollaborations with renowned Swiss movement suppliers and assembly lines, together with assembly resources in Switzerland, Hong Kong and Mainland China, offering flexible production arrangements and value-added services.Aftercare, parts and fulfillmentIn-house repair service and parts department support customers’ needs after production with efficient turnaround for repair, parts replacement and related aftercare requirements.By handling the complexities of product development, engineering and manufacturing, Time Grand enables watch brand customers to focus on marketing, sales, customer-facing aftercare service and long-term brand growth.    

One-stop OEM & ODM Watch Development Solutions

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. 

My Sourcing