1.  Look at the surface and section:

Surface and section is bright - aluminum alloy is high and pure. Surface color is not bright and the section is black-Profile is made by recycle material.

Reason:Due to raw material is different, so the quality of aluminum finished profile is different.

Baiyi: All the new national standard aluminum bars, 100% primary materials, never use the recycle aluminum.

2: Comparedthe intensity: Two kinds of aluminum, good material and sub-material collidetogether. The good one will not have too much knock trace, the other one willbe concaved to a dent.

Reason: Theraw materials and the control level of temper in the heat treatment.

Baiyi: We have the rich experience 25 years in aluminum field with the high capacity of heat treatment. We can improve the strength of the product effectively.

3: The offer of aluminum profile: 

For example, we take a 4040 aluminum profile as a reference. Some offers are more than $150, and some offers are more than $180, the others are more than $280. In fact, the raw material quality, surface treatment and wall thickness are all different. This is why the price is so different.

Reason: Theraw material, surface treatment and wall thickness are different.

Baiyi: Aluminum profiles have passed ISO 9001: 2008 and SGS International Third-Party Testing,they have the quality guarantee.