Laminate flooring is one of the most popular floorings. Because of its wide design options  and reasonable price.It is easy to  maintenance,no complicated daily cleaning required,and it can be replaced quickly when damaged or changing pattern.
1.The structure of the laminate flooring：

1) wear-resistant layer:It is aluminum oxide finish,to protect the flooring surface against big and deep scratches and keep water from getting into flooring.
The wear-resistant layer is divided into five class:AC1~AC5 Class
Abrasion classes contract is based on the prEN13329 and GB/T 18102-2000.

2) Decorative layer:
The color of flooring will be printed on this paper and it contains the different patterns of laminate flooring.
3) Substrate material:
It is medium or high density fiberboard which is pressured from wood fiber with eco-friendly and non-toxic glue.There are white color and green color base cores,and the green core contains the  moisture-proof material.
4) Balance layer:
It could cause the board bending when pressing the wear-resistant layer and decorative layer. A balance layer is required to balance the strength of two layers.
2.Laminate flooring grooves:
1) Square Edge
Flooring can be extremely flat after installation,no gap,easy to clean,no dust sticking inside of the gap.
2) V-groove
It looks like solid wood flooring with grooved edge. The biggest problem with V-groove is that the dust is easy to be sticked in the gap.It need to be waxed on the grooves after installation immediately.
3) Molded groove(U-groove)
When pressing,the edges on flooring will be pressed into a U-groove,it is better than v-groove,V is too deep,U is shallow,So,the dust in U-groove is easier to be cleaned than it in V-groove.