When you are old, your hair is white and your sleep is dim. When you are old, you can't walk, the fire is beside the fire, and you can remember the youth... A "When You Are Old" sings too many Chinese young people's feelings about their parents, and the emotions can't help but make people cry. Working hard, hard to handle, time has not slowed down because of our deep feelings, and the blue silk next to them has already been dyed with snow frost. Unconsciously, they are old.

The medical device industry is also enjoying important benefits - from September 30, 359 medical device products can be exempted from clinical trial "treatment".