The investigation follows petitions from six privately owned US plywood producers into the imports, which are used in wall panels, kitchen cabinets, table and desk tops, and flooring.

In 2016, imports of hardwood plywood products from China were valued at an estimated US$1.15bn, commerce secretary Wilbur Ross said in a statement.

The Commerce Department said it calculated preliminary subsidy rates of 111.09% for Shandong Dongfang Bayley Wood Co and 9.89% for Linyi Sanfortune Wood Co.

Sixty-two other companies received a subsidy rate of 111.09% and all other producers/exporters in China were imposed a preliminary subsidy rate of 9.89%, the department said.

The Commerce Department said it is scheduled to announce its final determination soon unless the statutory deadline is extended.