Douai has passed many quality tests. It is certified under both domestic and international standards such as CE, UL, CCC, and GOST. It has an anti-abrasion spraying coat, which improves its long term abrasion performance
z******n
The production of Douai mainly involves the following stages, including control system design, fabrication, welding, spraying, commissioning, and assembly. This product has found its way to more than 60 countries around the globe
z******h
The quality control for Douai is required to carry out thoroughly. Before packaging, it will be checked to make sure no impurities are included, and it will be packaged with thick corrugated paper to protect the four corners. Its painting color can be customized to satisfy the needs of different customers
i******e
Douai passes many Lens and Optical testings which include luminous transmittance, UV transmittance, blue-light transmittance, and anti-reflection luminous reflectance. It significantly reduces manpower costs
u******c
Douai is of rational design. Its idea is from a design team composed of Industrial designers and architects who understand the fundamentals of shape, form, and function. This product can survive complicated and harsh geological and meteorological conditions
m******j
This product stands out for its durability. With a specially coated surface, it is not prone to oxidation with seasonal changes in humidity. All parts and accessories of this product come from renowned suppliers of the engineering industry