Take the keys, align the silicone keys with the positioning posts of the upper case and install them into the upper case. Note that the keys must be assembled in place, and each key should be flattened and pressed to the bottom to make it protruding.
Take the keys, the silicone keys to the upper shell positioning column loaded into the upper shell, pay attention to the keys need to be assembled in place, each key flattened, pressed to the end, so that they are raised.
Take the key, align the silicone key with the positioning column of the upper shell, and install it into the upper shell. Pay attention to the key assembly in place, press each button flat and press to the bottom to make it bulge.