Do Ngoc Company
Last updated: 23/6/2026
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Land Lot No. 19, Group 31, Zone 5, Cao Xanh Ward,
Quang Ninh Province, Vietnam
Business Category
Business Type
Manufacturer
Company Introduction
Established in 2017, Do Ngoc Company is a professional heat treatment processing enterprise equipped with an advanced Taiwanese continuous mesh belt conveyor line utilizing CH606 salt bath technology. Operating a modern facility built on an expansive area of 2,635 m2, we are highly committed to delivering premium products and services that fulfill every stringent requirement of our clients.
❁ Our Core Heat Treatment Technologies: Soft Annealing Technology - Tempering Technology - Quenching and Hardening Technology - Normalizing TTechnology
Key Capabilities:
✪ We specialize in the precision heat treatment of post-machined mechanical components fabricated from diverse steel grades, including S22C, S35C, S45C, S50C, SK2, SK4, SK5, SK7, KD11, and more.
✪ We consistently achieve a hardness range of 28 to 56 HRC for S22C through S50C steel products, and 28 to 62 HRC for SK2 through SK5 steel products. Custom HV hardness specifications are also tailored to client requirements.
✪ Our controlled thermal process guarantees absolute zero distortion and warping while preserving the original surface brightness and finish post-treatment.
✪ Treated parts feature superior corrosion resistance, remaining rust-free for 4 to 6 months under proper storage. This exceptional shelf life significantly optimizes subsequent electroplating and surface finishing workflows.
❁ Our Core Heat Treatment Technologies: Soft Annealing Technology - Tempering Technology - Quenching and Hardening Technology - Normalizing TTechnology
Key Capabilities:
✪ We specialize in the precision heat treatment of post-machined mechanical components fabricated from diverse steel grades, including S22C, S35C, S45C, S50C, SK2, SK4, SK5, SK7, KD11, and more.
✪ We consistently achieve a hardness range of 28 to 56 HRC for S22C through S50C steel products, and 28 to 62 HRC for SK2 through SK5 steel products. Custom HV hardness specifications are also tailored to client requirements.
✪ Our controlled thermal process guarantees absolute zero distortion and warping while preserving the original surface brightness and finish post-treatment.
✪ Treated parts feature superior corrosion resistance, remaining rust-free for 4 to 6 months under proper storage. This exceptional shelf life significantly optimizes subsequent electroplating and surface finishing workflows.
Products & Services
Heat treatment services
Photo Gallery
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Heat treatment products
Factory images
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Do Ngoc Factory
Company Profile
Company Name
Do Ngoc Company
Business Category
Business Type
Manufacturer
Tax Code
5701887847
Year Established
2017
