US President Donald Trump (L) and China's President Xi Jinping shake hands at a press conference following their meeting outside the Great Hall of the People in Beijing. Artyom Ivanov | TASS | Getty Images

For Malaysian factories that make light-emitting diodes, it is an opportunity. For American makers of outboard boat motors, it is a threat. For the biggest sellers of flat-screen televisions, it is a nuisance. The emerging trade war between the United States and China has prompted predictions of severe economic and geopolitical disruption. But for any given industry, the impact of tariffs depends on the microeconomics of its products: How much does demand change when its prices rise? Are substitutes readily available? How much extra productive capacity is there around the world, and how long would it take to get new manufacturing facilities up and running? “How this will play out is idiosyncratic to any given product and unique to each supply chain,” said Daniel Rosen, partner at the economic research firm Rhodium Group. “Nobody can honestly claim high confidence that they understand what the overall impact will be. You may as well project the weather on a Tuesday afternoon a year from now.” More from the New York Times: Trade skirmish or war? Who gets hurt? Trump's ace in the hole in trade war: a strong economy Harley Davidson, blaming EU tariffs, says it will move some production out of US The United States imposed its first wave of tariffs over the spring, and each of the 1,102 goods that may be affected will end up with its own list of winners and losers. To see how this may unfold, it’s helpful to examine the different trade patterns for those goods, along with some of the thousands of comment letters that companies and industry groups have submitted to the U.S. Trade Representative. And executives and other experts have their own sense of exactly how supply chains might be rerouted and prices might swing for particular goods. The lesson that emerges: Be skeptical of predictions of radical disruption to major industries in the near term. For now, companies have options to avoid some of the most severe risks. But the longer the trade dispute lasts, the more products will get pulled into it. And the more the United States finds itself at odds not just with one other major economy but the entire world, the more it makes sense to worry. The workarounds that companies are using so far wouldn’t succeed in an open-ended, indefinite trade war.

In LEDs, a Gap Other Countries Can Fill

China has the world’s second-largest economy and is a major supplier of many of the products lining store shelves in the United States. The Trump administration’s first round of tariffs is devised to focus on goods for which there are many other suppliers. For about half the items, the share of American imports coming from China was less than 10 percent, based on a new analysis of government data on the sources of the affected products conducted by the Peterson Institute for International Economics. That figure was higher for some of the products that account for the larger share of imports, so China had a 23 percent market share if you use a weighted average. Either way these are not markets where China has a monopoly or anything close to it. Consider light-emitting diodes, the tiny part that makes LED light bulbs illuminate and are used in many industrial settings. The United States imported $637 million worth of them from China last year, more than any other country. But that doesn’t mean China is the only supplier. Japan and Malaysia exported an additional $593 million in LEDs in the United States combined. So for American companies that import the diodes and incorporate them in their products, such as solar-powered streetlamps, China isn’t the only option. The question is whether other countries not subject to the 25 percent tariff can accommodate a potential surge of demand. In Malaysia, the LED industry senses opportunity. “The trade war, I would say it will benefit us if it really keeps going in the direction of tariffs,” said Daniel Fong, senior regional manager of Oversea Lighting and Electric, located 40 minutes from Kuala Lumpur. “The U.S. market is cutting off all ties to China, and in that sense we have a bigger opportunity to benefit the U.S. market with Malaysia-made products.” The industry in Malaysia has struggled to make inroads in the American market, in part, said Jamie Fox, a lighting components analyst with IHS Markit, because China subsidizes its LED industry. A crucial machine needed for the manufacture of the diodes can cost $2 million, but regional subsidies in China make them available for half as much, putting competitors outside China at a price disadvantage. If tariffs make Chinese exporters less competitive, the balance may shift. John See, chief executive of QAV Technologies, said his company’s two LED factories in Penang could quickly increase production by 300 to 400 percent, if demand were there. Malaysia, he suggested, might no longer have to play “second fiddle” to China in business with the United States.

A Looming Threat for Boat Makers

It’s easy for American importers to replace Chinese LED supplies with those made elsewhere because the parts are relatively standard; the issues are mostly price and availability But other Chinese products covered by tariffs aren’t so easy for their importers to substitute. Ray Electric Outboards in Cape Coral, Fla., imports its powerheads — the electric motors that turn the propeller for a small boat — from China. Shifting to a different supplier is no small matter. “Have I tried different companies to get a different motor?” said Joy Hurley, business manager at Ray Electric. “Yes, but it’s just not as readily available. There is nothing else that will work in our system.” The company has molds that are already made to fit the company’s current suppliers’ products, and it costs thousands of dollars to change them. “The motors that I have as options in the United States don’t fit in our housing,” Ms. Hurley said. Meanwhile, the company’s profit margins are too thin to absorb the cost of 25 percent tariffs. In the short run, she said, the company will need to raise prices to pass the tax through to customers. The American boating industry has complained of many elements of the tariffs. Mercury Marine, for example, of Fond du Lac, Wis., said in a letter to the U.S. Trade Representative that it employs 4,800 American workers, but that the manufacture of 40-to-60-horsepower boat engines in Suzhou, China, is crucial to the enterprise. “It’s very difficult for some of these companies to absorb these costs entirely,” said Nicole Vasilaros, senior vice president at the National Marine Manufacturers Association. Motors are one of 300 frequently used boat parts facing the tariff, she said, which cumulatively could mean a $2,000 price increase on 14- to 16-foot vessels that generally cost in the low five figures. Because boats are often bought for recreational purposes, their demand tends to be elastic — highly responsive to price changes. That means those higher prices may well translate into fewer people enjoying their summer in a new motorboat.

A Display of Flexibility With Flat-Screen TVs