Chinese imports rose for the first time in three months in June as buying from overseas became profitable and supply tightened after consumers drained local stockpiles. There are “strong signs” that the country will “come back and buy in a more aggressive way,” according to Codelco, the top producer. Prices slid 3.7 percent in the first six months of the year as demand waned. The metal has gained 46 percent in the past year, reaching a record $4.6575 on Feb. 15.

Caterpillar Inc. said Friday it agreed to form a joint venture with a Chinese transmission manufacturer that will build drivetrain systems and […]