Aluminum composite panel wholesale products in the production of the general is the use of multi-layer materials,
the upper and lower layer of high purity aluminum alloy plate,
the middle layer of low-density polyethylene core board,
the outside of the protective film, according to the indoor and outdoor environment,
you can also choose different coating materials.
When purchasing aluminium composite panels,
you should check that the thickness, using vernier calipers to measure if necessary.
Then pay attention to whether the surface of the aluminium composite panel is flat and smooth,
there should be no ripples, no bulges, no pitting and no scratches.
Take two pieces of aluminium composite panel samples and rub them against each other a few times to see if the paint falls off.
If the surface is painted with good quality aluminium composite panel,
the paint film colour is uniform and the adhesion is strong, and the paint is not easily removed after rubbing.
Feel free to break off a corner of the aluminium composite panel,
if easy to fracture, it means that it is not PE material or adulterated with counterfeit materials,
available lighter burn, if it is PE material, should be able to burn completely, adulterated with counterfeit materials, after burning, there are impurities.