Thank you for your question. Two questions. The first question is with respect to I&SS, early wafer input and the capacity and product mix improvement prospect, qualitative point, in my understanding. And your second question, adjusted EBITDA. Based on this fiscal year's plan, what would be the level of EBITDA.
So first, to answer your first question. Regarding capacity, in fiscal '20, in Q4, at the end of Q4, the mask -- well, installation, it's about 139,000. That was the capacity. And the previously, it was 131,000. So it's up. The plan was to start operating it in April. But because of, well, earlier preparation, we started the operation partially. That's why we have this number. And in fiscal '21, at the end of Q1, it will be 141,000 in our prospect.
So what about the increased capacity? Well, increased -- or the building for increase, that's just for some production lines. So that doesn't mean -- it doesn't mean that there going to be huge a increase in the capacity.
With respect to the wafer input in, well, 4Q, the track record was 128,000. That's the average, well, simple math. It was expected. And our in-house capacity is in full operation.
And in fiscal '21, in Q1, the wafer input, the 3-month average is 138,000. And again, in-house capacity is expected to be in full production. We have a lot of inquiries these days. In addition, in fiscal '21, the -- well, in preparation for the shipment of new models of smartphone, we are increasing our production.
With respect to the prospect of product mix improvement, in fiscal '21, in the second half of this fiscal year, 0.7, well, a small product will pick up. And so when it picks up in fiscal '22, higher value-added types will be launched. That is the prospect at this moment. So with respect to product mix improvement, that is the idea that we have.
Also about adjusted EBITDA, well, this is just a ballpark. Please understand it's just proximation. But in fiscal '21, it should be JPY 1.3 trillion in fiscal '21. But in a single year, well, evaluation of that in a single year, given our, well, mid- and long-term plan, well, we should look at it -- we should look at the total. So if you just look at a single year, we'll launch something. That kind of a discussion should not be done in my view.