
High Quality
High Quality
High quality, safety, durability, reliable performance, simple and stable operation...
High quality, safety, durability, reliable performance, simple and stable operation...
These are the qualities that we provide, and our clients pursue.
To achieve ensure these qualities:
We strictly control the quality in every production process from raw materials to the smallest components.
Through our 20 years of hard work and persistence, our company have been providing the best products and services for our clients, which results in our promising and popular reputation in the European and American markets.
These are the qualities that we provide, and our clients pursue.
To achieve ensure these qualities:
We strictly control the quality in every production process from raw materials to the smallest components.
Through our 20 years of hard work and persistence, our company have been providing the best products and services for our clients, which results in our promising and popular reputation in the European and American markets.
Material
Material


High quality material in according to industry standard
From the performance to thickness tolerance, all of the materials strictly conform to the industry standard, which provides a guarantees for stability and quality.
High quality material in according to industry standard
From the performance to thickness tolerance, all of the materials strictly conform to the industry standard, which provides a guarantees for stability and quality.


High grade tempered steel gears
High grade tempered steel gears
Our high grade steel material and standard surface heat treatment, ensures excellent performance for all gears used in drive system.
Our high grade steel material and standard surface heat treatment, ensures excellent performance for all gears used in drive system.
Production
Production

Automatic welding
Automatic welding
Our application of standard automatic welding helps provide efficient production and stable quality.
Our application of standard automatic welding helps provide efficient production and stable quality.


Surface treatment
Surface treatment
To ensure our products’ corrosion resistance in harsh environments, we offer various surface treatments in accordance to the industry standard as your request.
To ensure our products’ corrosion resistance in harsh environments, we offer various surface treatments in accordance to the industry standard as your request.
Quality Inspection Control
Quality Inspection Control

Strict product quality control and product inspection, strictly follows the ISO9001 standard.
Strict product quality control and product inspection, strictly follows the ISO9001 standard.
Qingdao Donglu Industries Ltd.
Add: 24C, Huaren International Mansion,
2 Shandong Road, Qingdao, China 266071
Tel: +86-532-80971100
Email: info@dnl.com
Qingdao Donglu Industries Ltd.
Add: 24C, Huaren International Mansion, 2 Shandong Road, Qingdao, China 266071
Tel: +86-532-80971100
Email: info@dnl.com