Where we are
Yan Tian Nanshan Industrial City E05, Fenggang Town, Dongguan, Guangdong, China.
04 / The factory
Dongguan
Zhenglong Precision.
Dongguan Zhenglong Precision Hardware Products Co., Ltd. （东莞市正龙精密五金制品有限公司） is a source factory focused on custom non-standard precision hardware components.
Our scale
Approximately 1,000 m² factory, 50+ employees and 20+ years of manufacturing experience.
Equipment base
20+ NC turning machines, 25+ CNC and five-axis CNC machines, plus drilling, milling, grinding and finishing capability.
Built for a broader
hardware market.
Watch cases and related precision parts remain an important capability, while our current growth direction is to win more custom hardware orders across sporting goods, luxury accessories, titanium components, liquid-cooling hardware and industrial products.
Start a conversationProject history / stated accurately
Direct work and
supply-chain experience.
Brand and application references are separated by relationship so procurement teams can understand exactly what is being claimed.
01 / Direct project history
Domestic watch brands
Production work has included direct projects for domestic watch brands such as Geya.
02 / Former-employer experience
Recognized watch supply chains
Through a former employer, the team machined case projects for supply chains connected to Fossil and Seiko. At Zhenglong, our direct project history includes domestic watch brands such as Geya.
03 / Titanium application work
Medical and demanding applications
The factory has machined drawing-based titanium parts, including stable batches for medical applications. For regulated use, compliance requirements are reviewed with the buyer before quoting.
Factory context
A focused workshop
built for parts.
Zhenglong is a source factory, not a reseller. The buyer talks directly to the people who review the drawing, run the machines, coordinate the finish and prepare the part for delivery.
- Approximately 1,000 m² factory in Fenggang, Dongguan
- 50+ employees across machining and finishing teams
- 20+ years of manufacturing experience
- Direct communication with engineering and procurement
How we work
as a source factory.
01 / Direct communication
Buyer talks to the factory
There is no reseller layer between the buyer and the people who review the drawing, run the machines and coordinate the finish. The person you email is the person who will review your part.
02 / Clear process scope
Machining and inspection in our workshop
CNC turning, CNC milling, five-axis machining, automatic lathe work, drilling, tapping, precision grinding and dimensional inspection are handled in our Dongguan workshop. Polishing, brushing, blasting and engraving can be completed in-house; PVD, plating and stone setting are coordinated with qualified finishing partners where required.
03 / Prototype to production
From first sample to 1,000+ batch
We support sample development and production quantities of 1,000+ pieces. The process and inspection requirements are confirmed against each drawing before production begins.
Finishing and packaging
Traditional hand finishing
with controlled packaging.
Appearance-critical parts are hand-polished and prepared by our finishing team, then packaged before shipment. Machining and inspection are handled in our Dongguan workshop; specialist coatings and setting are coordinated to the confirmed process route.
- Polishing, brushing and hand surface finishing in our workshop
- PVD, plating and stone setting coordinated with qualified partners where required
- Engraving completed in our workshop where the process is confirmed
- Controlled packaging and labeling before dispatch
Ready to review your drawing?
Send part type, material, quantity, finish and target date. We reply with manufacturability and a clear next step.