1 Technical advantages

DA AO specializes in independent development and design. Our engineers are skilled in software such as AUTOCAD, PROE, SOLIDWORKS, and UG. We can design, develop, produce, and deliver your products based on your drawings, samples, or just one idea. Our company has 15 outstanding technical engineers, of which 10 have over 10 years of work experience and extensive understanding of conventional mechanical structures. This has made our clients highly recognized our abilities, and our company has also solved many difficulties for our clients. We hope that our experience can also help you solve these difficulties.



2 Production advantages

Our company has advanced and comprehensive sheet metal processing equipment, pre-treatment lines, powder spraying lines, paint spraying lines, etc. We also have machining centers, turning and milling composite, and gantry machining centers and other machining equipment. With advanced equipment, the corresponding speed is fast, efficiency is high, quality is stable, and the plan is clear, meeting the process requirements of different products, ensuring the size of product processing and the appearance effect after assembly, and ensuring the delivery time of products.



3. Quality assurance

1. Quality control

1) Inspection of raw materials upon arrival at our factory - Incoming Quality Control (IQC)

2) Check details before running the production line

3) Conduct full inspection and patrol inspection (IPQC) in mass production process quality control

4) Inspection of goods after completion - Final Quality Control (FQC)

5) Inspection of goods after completion - Outgoing Quality Control (OQC)

2. Detection ability

We can provide comprehensive testing methods and reports for raw materials, production processes, and finished products, such as chemical composition, mechanical properties, hardness, metallographic structure, full size, adhesion, color difference, glossiness, etc

Q1: What material of the leaf spring can you supply?

A: We can supply different materials of leaf spring, including 60Si2Mn, SUP9, 51CrV4, or any material as you require. Before placing the order, please make sure the material to us or we can advise the material to you according to your specification.

Q2: How about the quality of your product?

A: Our products are certified to ISO9001, TS16949 international quality standards. We have very strict Quality Control Systems.

Q3: What's your best price for your product?

A: We will quote you best price according to your requirements, so when you making an inquiry, please let us know the quantity and material of the product you need. The more quantity, the better price.

Q4:Can we print our own logo or label on the springs?

A: Yes, you can. We support logo print&label print&stamping, normally the print is free.

Q5: What about the package of the product?

A:The goods will be packed according to your requirements and in well protection before delivery.

If you are interested in our products, please do not hesitated to contact us, we will do our best to assist you!

For more information, please contact us as follow:
International customer representative: 
WEB: