

Direct drawing-to-part engineering review
Submit custom screws, nuts, bolts, and forged components manufactured to your exact drawings. We ensure strict quality control, grain-flow alignment, and worldwide delivery.

Submit your technical drawings
Upload your CAD files and specify your production parameters. Our engineering team will review the material flow and tolerances before issuing a formal quotation.


Technical and logistics FAQ
What file formats do you accept for engineering reviews?
We accept standard industrial CAD formats including STEP, IGES, DWG, and high-resolution PDF. Our engineers analyze the files to ensure optimal cold-heading efficiency.
What is your standard turnaround time for a custom quote?
We guarantee a comprehensive technical review and pricing estimation within 24 hours. This includes a preliminary assessment of material flow and tolerance feasibility.
How does your dual-facility setup benefit global buyers?
With active operating plants in Dongguan, China, and Ninh Binh, Vietnam, we offer dual-facility redundancy. This mitigates supply chain risk and optimizes international logistics.
What tolerances can your cold forging process maintain?
Our high-speed cold heading and secondary CNC turning lines hold critical tolerances down to +/- 0.02mm, ensuring strict compliance with your technical drawings.
Hoa Khoa Manufacturing
OEM Cold Forging & Custom Fasteners
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huake1688@gmail.com
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© 2026 Hoa Khoa Manufacturing-Direct-from-factory OEM production since 2008.
DUAL-FACILITY REDUNDANCY