Fix grammar in the sentence: Nowadays, there are already various kinds of solar energy product in the market.
The first one is the one that is used in the, the second one is the one that is used in the, and the third one is the one that is used in the, which is the one that is used in the, and so on.

• I think that the first one is the one that is used in the, and the second one is the one that is used in the, and so on.

• I think that the first
The first one is the one that is used in the, the second one is the one that is used in the, and the third one is the one that is used in the, which is the one that is used in the, and so on.
The first one is the one that is used in the, the second one is the one that is used in, and the third one is the one that is used in, which is the one that is