Yesterday, a US-China tariff deal was announced to temporarily reduce tariffs for 90 days as they continue to work on a more permanent arrangement. I think there are a few S&P/ASX 200 Index (ASX: XJO) shares that are appealing to buy in this environment.

According to reporting by various media, including CNBC, the reciprocal tariffs introduced by both sides will reduce to 10% for both sides for 90 days. The Trump administration will keep the 20% fentanyl-related tariffs on China in place.

Time will tell what the tariffs look like in three months from now, but it's a positive step.

With things looking up, these are two ASX 200 shares that I'm attracted to.

Rio Tinto Ltd (ASX: RIO)

The ASX 200 mining share is one of the largest producers and sellers of iron ore. Chinese demand is a key part of the picture because that influences what the iron ore price can trade at, which then plays a significant part in Rio Tinto's profitability.

This trade truce could lead to a boost for the iron ore price and a boost for Rio Tinto shares. I think it's an appealing investment today. The outlook for iron ore is much more compelling, as well as other economy-aligned commodities that Rio Tinto produces such as copper.

In the long-term, there may still be a bit of a decoupling between the US and Chinese economies, but I'm optimistic on Rio Tinto's outlook for the foreseeable future.

Stronger profits could also mean the ASX mining share is able to pay a larger-than-expected dividend.

I'm not going to try to precisely predict where the iron ore price will go in the next few weeks, but my optimism has increased about the ASX 200 mining share

Reece Ltd (ASX: REH)

Reece is a major bathroom, kitchen, plumbing and HVAC-R supply ASX 200 share, with a significant presence in both Australia and the US.

As the chart below shows, the Reece share price is down around 40% in the last 12 months because of the weakness in demand across both countries.

An improving trade situation between the US and China could have positive ramifications for Reece's products in the US and Australia, particularly if the US economy performs better than what had been previously (negatively) expected.

I'm also hopeful that further interest rate cuts in Australia by the RBA could spur stronger demand for bathrooms and plumbing in new and renovated properties.

I think Reece is a high-quality ASX 200 share, but it has gone through a rough period, making the current valuation attractive for a turnaround, in my opinion.