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Original equipment manufacturers Daimler AG and Cummins Inc. reported more success in North American truck markets during the year’s first quarter, compensating for problems in other parts of the world.

Wabash National Corp. reported a higher first-quarter profit as trailer shipments increased.

U.S. manufacturing activity accelerated in April, the Institute for Supply Management said Tuesday.

Manufacturing is making a comeback in North America, a trend that industry experts say is being driven by a re-examination of the cost of producing and shipping goods from Asia to customers in the United States and Europe — and new supply-chain realities.

Truck and auto components maker Eaton Corp.’s first-quarter profit rose 8% as its truck unit’s sales improved 10%, the company said Monday.

CHENNAI, India — Daimler AG officially opened its massive plant here on April 18, as the world’s largest commercial vehicle maker tries to push its way into what has become the fastest-growing truck and bus market in the world.

An index of manufacturing activity in the Philadelphia region declined this month to its lowest level since January but continued to show expansion, the Federal Reserve Bank of Philadelphia said.

CHENNAI, India — Daimler A.G. officially opened its sprawling truck manufacturing plant here Wednesday to produce vehicles for its newest brand, BharatBenz, as the company looks to gain entry into India’s domestic market, the world’s fastest growing for trucks and buses.

Manufacturing activity in the New York region expanded in April at the slowest rate in five months, the Federal Reserve Bank of New York said Monday.