In its small way, Tsutomu Nyuwa's metalworking shop in Yasugi, Japan, has been feeding the economic boom 700 miles away in China.
Many of the precisely machine-tooled gears, bearings and other components turned out by Mr. Nyuwa and his 14 employees end up on Chinese work sites, in the engines of the giant earthmovers that have powered China's breakneck pace of construction.
But with Chinese growth now slowing, Mr. Nyuwa's business is slumping — along with the rest of the Japanese economy, which data released on Monday showed is in recession again.
Japanese equipment makers like Komatsu, Kubota and Hitachi Construction Machinery are selling fewer excavators and bulldozers in China and, in turn, are buying fewer parts from manufacturers like Mr. Nyuwa. Orders from the construction sector are off 40 percent this year, he estimates.
"It's definitely come back down to earth, and we feel it," Mr. Nyuwa said of the Chinese market.