End-to-end smart wearable manufacturing, under one roof
EngraSun is a brand of Shenzhen Mingyang Industrial Development Co., Ltd. Based in Shenzhen, China, we have many years of experience in the smart wearable device industry. We focus on developing products with our own proprietary molds and original designs, delivering a distinctive product experience.
Own designs, full customization, global markets
To date, we have developed a range of smart watches, smart bracelets, smart rings, and smart glasses. For these products, we offer comprehensive customization, including industrial design, structural design, and hardware and software customization, as well as OEM/ODM services.
In addition, many of our products have been exported to customers around the world, including markets such as North America, Europe and Japan. We offer reliable quality, competitive pricing, stylish designs, and flexible OEM/ODM customization. We also provide small-batch and simple customization services—such as logo printing and custom brand packaging—with low minimum order quantities (MOQs), helping customers test new markets quickly.
Our goal is to build long-term partnerships by providing creative and innovative solutions that meet customer needs. With dependable technology, high-quality products, and professional service, we are confident that we can achieve further growth together with our customers. We sincerely welcome inquiries and look forward to discussing how we can build a long-term partnership with you.
EngraSun at a glance
Verifiable facts about the company behind your order — the same details we provide on contracts, invoices and compliance documents.
| Legal company name | Shenzhen Mingyang Industrial Development Co., Ltd |
|---|---|
| Brand | EngraSun — registered trademark in China, the United States and the European Union |
| Founded | June 2019, Shenzhen, China |
| Facility | Approx. 1,000 m² assembly facility |
| Team | Approx. 50 people |
| Monthly capacity | Approx. 30,000 units |
| OEM/ODM experience | 7 years, full-process customization |
| Export markets & certification | Worldwide — established customers in Europe, Japan and other regions; CE, FCC, RoHS and TELEC certification scope |
Eight capabilities, one accountable partner
Instead of coordinating an ID house, an electronics vendor, a firmware team and an assembly factory, you manage one EngraSun project team — for both wholesale orders and custom programs.
| Industrial design (ID) | Concept development, appearance design, CMF (colour, material, finish) and product line planning. |
|---|---|
| Mechanical & structural design | Case and strap engineering, stack-up design, prototyping and tooling coordination. |
| Hardware development | PCB and electronics engineering, sensor selection and component sourcing. |
| Firmware & software | Device firmware, UI configuration, feature customization and factory testing software. |
| Custom companion apps | Companion app configuration and custom app projects; white-label available for selected models (e.g. TK20) and on request for others. |
| Product assembly | In-house assembly of watches, bracelets, rings, glasses and audio products, with QC at each stage. |
| Wholesale supply | Every catalog model is also available for wholesale and distribution orders — mixed-model ordering, accessory bundling and stable repeat supply, with or without custom branding. |
| Mass production | Scaled production at roughly 30,000 units/month, packaging, manuals and export logistics. |
Where your products are built
Real photography and process videos from our Shenzhen facility — assembly, testing, packing and dispatch under one roof.
Assembly & production
ESD-protected assembly lines build our watches, bracelets, rings and glasses — from component preparation to final casing, with trays and fixtures dedicated to each model batch.
Semi-finished assemblies
Display modules, housings and battery-PCB assemblies are kitted by model and batch between processes, keeping every production run traceable from incoming material to finished unit.
Quality control & testing
Lens-thickness measurement, appearance inspection, multi-tier charging-ageing racks and shielded-room RF testing are handled in-house — plus waterproof testing for rated models — before anything is packed.
Finished goods & packing
Passed units move to our packing workshop, where retail boxes, manuals and inserts are assembled and sealed — ready for branded OEM programs or standard wholesale cartons.
Packaging & printing
Custom retail packaging is produced on our packaging line — colour printing, die-cutting, laminating and box gluing — so branded packaging stays fast, consistent and under our control.
Testing instruments
Dedicated lab equipment covers humidity, salt-spray, battery-cycle, torque, tension and air-tightness verification for materials and finished units.
Warehousing & shipping
Cartons are palletised, container-loaded and dispatched from Shenzhen with export documentation for destinations worldwide — small-batch orders ship with the same care as full programs.
Quality first
Quality control runs at incoming material, assembly and pre-shipment stages. Specifications and certification requirements are agreed before tooling starts.
Partnerships that last
Our existing brand customers have worked with us for more than four years. We prioritize stable quality and communication over one-off orders.
Market-ready worldwide
CE, FCC, RoHS and TELEC certification support, English documentation and finishing that meets demanding channels worldwide — from the EU and Japan to the Americas, Middle East and Asia-Pacific.
Visit us or arrange a video tour
Factory visits and live video walkthroughs can be arranged for active projects. 3rd Floor, Building B, No. 2 Ziping Road, Xiuxin Community, Kengzi Subdistrict, Pingshan District, Shenzhen, China.