In the construction materials industry, product quality and origin are not only technical requirements, but also a measure of customer trust and the foundation of every sustainable construction project. Especially for high-end residential buildings, commercial developments, and public infrastructure, selecting certified materials is a decisive factor affecting durability, safety, and long-term usage value.

In this context, the two certifications CQ (Certificate of Quality) and CO (Certificate of Origin) are regarded as important evidence of quality commitment and product transparency in the construction materials sector.

CQ – Certificate of Quality: Ensuring technical standards

CQ (Certificate of Quality) is a certification confirming that a product fully meets regulated quality standards. For tiles, CQ demonstrates that the product has been tested for core technical factors such as load-bearing capacity, dimensional stability, color durability, and production consistency.

These criteria are particularly important for projects that demand high durability and long-term operational performance. Holding CQ certification provides investors, contractors, and consumers with a clear basis for evaluating product quality, helping to reduce risks during construction and usage.

CO – Certificate of Origin: Transparency and brand responsibility

Alongside quality, product origin is an increasingly important factor in the construction materials market. CO (Certificate of Origin) is a certification that verifies the origin of goods, ensuring that products are manufactured at the registered location and comply with relevant regulations.

For enterprises, CO is not only a legal requirement but also a reflection of responsibility and credibility throughout the production process. For consumers and investors, products with clear origins increase confidence in selection and contribute to building long-term trust in the brand.

CQ – CO and their role in sustainable construction projects

In practice, CQ and CO have become key criteria in material selection for many projects nationwide. Beyond supporting acceptance procedures, bidding processes, and quality management, these certifications help optimize maintenance costs and enhance the durability and stability of structures over time.

Using materials with full CQ – CO certification is a necessary step to ensure that projects meet increasingly stringent technical, legal, and quality standards in the market.

Quality standards & quality control system at Dongtam Group

At Dongtam Group, CQ and CO are not standalone elements but integral parts of a comprehensive quality standards and control system applied throughout the entire production process. Dongtam tiles are manufactured domestically on modern production lines and undergo multiple rigorous inspection stages to ensure stability and consistency in every product.

This quality standard system enables Dongtam to strictly control everything from raw materials and manufacturing processes to final products, ensuring that every product released to the market is accompanied by complete CQ – CO certification in accordance with regulations.

This consistency in standards and quality control has made Dongtam tiles a trusted choice for numerous projects, from high-end residential developments to commercial projects and public infrastructure nationwide.

The Manor Central Park High-End Real Estate Project – Hanoi

National Innovation Center (NIC) Hoa Lac Project

Noi Bai International Airport Project

Flamingo Heritage Tan Trao City

In an increasingly competitive construction materials market, CQ – CO and quality standards are not merely procedural requirements, but guarantees of brand credibility. Choosing certified products provides peace of mind for consumers and investors while contributing to the creation of sustainable structures over time.

Dongtam Tiles – a guarantee of quality, building trust through reputation and sustainability for over half a century.