It must be technology... It is precisely because the technology is so good that even if there are too few manufacturers barely enough to use it, the price of products produced by the corresponding technology is very high. For example, the sound generating unit is basically a Lou's unit. So naturally, the price of Lou's unit is very high. From the perspective of earphone manufacturers, Lou's unit is the cost of materials. However, from Lou Shi's side, I sell real technology. So, infinite subdivision View Full Text

Today's classic encryption algorithms, such as DES, 3DES, AES, and RSA, are based on the fact that the attacker already knows all information except the key when performing security verification on them. That is, even if the attacker has determined which algorithm to use to encrypt the ciphertext, as long as he does not master the key, he can be deemed to be sufficiently secure. As long as the key is not disclosed, it is secure View Full Text