Cold heading lines for high-volume bolt and screw forming.
Company & Capabilities
About Donghuang Hardware
A factory-direct fastener manufacturer and one-stop supplier based in Yuyao, Ningbo — combining 20+ years of group manufacturing heritage with industry-and-trade integration since 2020. We deliver standard catalog parts and custom manufacturing to B2B buyers in 100+ countries.
Factory-Direct Since 2020
Two Decades of Manufacturing, Under One Roof
Ningbo Donghuang Hardware Co., Ltd. operates as an industry-and-trade integrated manufacturer from Yuyao, Ningbo, Zhejiang — a well-known hub for plastics and hardware in China. While Donghuang was established in 2020, it draws on 20+ years of group manufacturing heritage, giving us deep process know-how and a stable, experienced workforce.
We control the process from raw material to finished fastener: cold heading, hot forging, precision CNC machining, thread rolling, heat treatment, surface treatment and in-house mold making. That vertical integration lets us keep standard pricing competitive and custom costs low — with free samples so you can verify quality before committing.
220+Cold heading machines
220+Thread rolling machines
200+Export containers / year
FreeSamples available
Why Donghuang
Four Capabilities You Can Verify
Scaled production, in-house tooling, quality control and surface treatment — all under one roof in Yuyao.
Scaled Production
220+ cold heading machines and 220+ thread rolling machines for stable, high-volume output across standard and custom specs.
In-House Tooling
9 years of self-made mold experience (CNC + forging presses) keeps custom tooling in-house and your non-standard costs competitive.
Quality Control
Material & process inspection with support for third-party or on-site inspection at our Yuyao facility.
Surface Treatment
Zinc plating, black oxide, hot-dip galvanizing and Dacromet for the corrosion resistance your application needs.
220+
Cold heading machines
220+
Thread rolling machines
20+
Years experience
200+
Export containers / year
100+
Countries served
ISO 9001
CE
SGS
Free Samples
FOB / CIF
Certificate Records
Selected certificate records and compliance documents on file. Certificate numbers and validity periods are available on request from our team.
Certification badges shown above are claimed by the company. Certificate numbers and validity period are available on request from our team.
Inside the Factory
Real Production, Real Capacity
Placeholder images — replace with verified factory photography on deployment.
220+ thread rolling machines for consistent thread quality.
Zinc plating, black oxide, HDG and Dacromet lines.
CNC and forging presses for self-made molds (9 yrs).
Inspection and container loading for export.
Experienced workforce, 10+ years average tenure.
One Supplier, Every Standard
Manufactured to the Standards Your Market Requires
We produce to the major international fastener standards, so your procurement spec is met without sourcing from multiple vendors.
DIN
German Industrial Standard
ANSI
American National Standard
GB
Chinese National Standard
JIS
Japanese Industrial Standard
GOST (Russia) and IS (India) available on request — available on request. Metric (M) and inch (UNC/UNF) threads both supported. Common grades: 4.8 / 8.8 / 10.9 / 12.9; stainless A2 (304) / A4 (316).
Ready to Verify Our Capability?
Send your spec and we respond within 24 hours. Free samples available on request.
Get a Quote