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Company Introduction
Who We Are
Dong Guan Geng Yi Precision Casting Co.Ltd is located in Dongguan City, Guangdong Province, China which is specialized in precision casting of eyewear parts over 20 years.We work with many top eyewear brands over the world as we are one of the most innovative professional manufacturers in this field. We have excellent designer who are good in 3D design. We have several advanced CNC engraving machines, electrical discharge machines(EDM)as well as automatic CNC milling equipment. All molds and castings are developed and made in our company facilities. We have effective quality control system to provide high precision, reliable quality and customized products.
“Keep on doing better casting and do it the best”
Precision Casting / Automatic CNC / Cutting / Polishing / Sand Blasting / Electroplating / Crystal Enamel / various coloring methods
- Professional Competence
We are one of the most professional manufacturers not only provide casting, milling and plating processes for eyeglasses, but also can solve the problems of design, optimize processes and assemble quickly.
- Innovation
We bring in 3D printing technology which can do 3D patterns in 360 degrees for casting products. Creative metal molds are used for all casting products instead of traditional wax mold.
- Process Capbility
We have professional facilities and a strong design team to develop molds and fixtures.
- Most Competitive Products
The price of plated copper products is almost the same as those made of Zinc Alloy. Our existing standard copper products are available without molding fee. Customers can choose from our products catalogues.
Frequently Asked Questions
Yes. For products with existing molds, we provide up to 10 free samples. Freight costs are payable by the customer (freight collect).
Our standard MOQ is 100 pieces, with flexibility for trial orders or small-batch demands.
For new items, tooling takes 15 days, and mass production takes 7–30 days (timeline varies by complexity and quantity).
You can download our electronic product catalog on the website’s homepage or search in the COPPER and ZINC ALLOY sections.
Yes. We offer fully customized solutions based on your specifications, including reverse engineering via 3D scanning for existing products.
exercitation.
We require:2D/3D drawings (preferred formats: DWG, DXF, STP, IGS, PDF)
Material specs, surface treatment requirements, and tolerance standards
Order quantity and application details
Note: Our engineers can assist with design optimization or reverse engineering. Detailed info ensures faster quoting.
Most products have a tolerance of ±0.05mm. Critical components can achieve ±0.02mm precision.
We offer flexible shipping: air freight (standard/express), sea freight, or door-to-door delivery, tailored to your needs.