Wenming Xiao and Wenyi Su Xiao have listed for sale a four-bedroom, 3.5-bath townhome at 213 Longpoint Way in Gaithersburg for $439,000.

The 1,756-square-foot home was built in 1996 in Gaithersburg West of Eisenhower Hwy. It is located in the Orchard Ridge of Gaithersburg subdivision. Baochun Ge of Long River Realty is the listing agent.

Xiao is a contractor at the National Institutes of Health in Bethesda. Xiao previously worked as a bioinformatics scientist at Applied Biosystems and at Gene Logic Inc.

According to BlockShopper.com, there have been 1,165 home sales in Gaithersburg during the past 12 months, with a median sales price of $316,075.