First of all, I want to correct that the 10 thousand seals downstairs are photosensitive seals. This is sheer nonsense. You didn't answer with your hands. Secondly, it shows that there is no oil to replenish itself during use. For example, if the car is out of gas, it must be added. If it is not added, it will not move. Finally, talk about whether it is the same thing and difference;

First, what is the same thing? That is to say, are the functions the same, or can they achieve the same effect? My answer is almost the same, so why say almost, that is to say, there is a difference?

Second, there are differences. First of all, there is a difference in price. Photosensitive oil is more than ten thousand times more expensive. Tell me why it is expensive. Because photosensitive oil is expensive, the price of the purchased oil can be more expensive, and the photosensitive oil is exposed. In other words, you can copy a hair in A4 black and white, but you can't do it 10,000 times. 10,000 times is laser carved. Simply put, it is a light sculpture.

Finally, in fact, the difference between the two prices is very small now, because it is too troublesome and labor-intensive to make 10 thousand chapters, and it is easy to be eliminated by the market.