The quality of Douai is guaranteed by the strict inspection conducted through all stages and the quality and safety compliance tests required in gifts&crafts.
The production of Douai consists of two major steps. The first step is the extraction of raw materials; the second step is the grinding into pre-treated building materials.
l******u
The compound of Douai has gone through a standard procedure. For example, a rheometer test is carried out on every single batch of compound.
v******y
After the completion of Douai , another detailed examination is conducted to ensure that the product is technically, physically and aesthetically perfect.
n******i
Douai undergoes a series of production processes that involve prototyping, milling, turning, broaching, wire-cut electro-discharge machining (EDM), ultrasound wash, and assembly.
o******f
Douai is provided with the highest standard of durability and quality. Our production team adopts with the RTM technology to create superior product with structural strength.
q******y
The unique and commercial value of have made it a hot product in China.