TRUMBULL — German automotive engine component manufacturer Mahle will close its facility in Trumbull and lay off 99 workers starting December 31.

The Stuttgart-based company said the Connecticut facility is its only North American location that produces small engine cylinders, and the company is focusing more on large engines and automotive components.

Some of the work done at the Trumbull facility will be transferred to European factories, and customers will take on some assembly work in-house.

Mahle’s presence in Connecticut began in Fairfield in 1975, before moving to Bridgeport in 1981, and then Trumbull in 1995. The company’s six-month sales figures from June were roughly $4 billion.

 NEW BRITAIN — Guida’s Milk & Ice Cream has completed a 25,000-square-foot expansion of its dairy plant with a two-story addition.

The project, begun in summer 2010 by PDS Engineering & Construction, and includes a 50,000-gallon stainless steel raw milk silo, which will allow for separate storage of conventional and organic milk.

This is the second expansion of the company’s original facility in the past 12 years. The first involved the addition of a cooler, pasteurizing room and laboratory.

Guida’s was founded in 1932 and distributes to retail food and food-service customers throughout southern New England.