Why I don't like"Aluminum LED module"

The above photo, it's aluminum led module. I guess many people know it,But I don' t like this product,you must want to know the reason,below is my reasons:

1. The materials: The manufacturer claim that aluminum has very good heat dissipation performance,but they don't tell you that aluminum also absorb heat very quickly. Then its max working temperature may be lower than a plastic module.
2. waterproofness: O-ring built in the module is the key factor that make the module waterproof. But as you know, it will become loose after long time working.
3. Lock design:With lock design, it is hard to make small pixel pitch,like P5/P3; High precision is also required for panel beating, and gear wear will easily loosen

4.Flat cable:Easy to loosen, unstable connection

Above is my own viewpoints,you must want to know whether there is better substitute products.The answer is yes,if you want to know more,pls check this video: https://youtu.be/qRcDFknxtsM ,I will write a articl about it in last e-mail.