A pending Customs rule to stop duty evasions on scrap metal shipments to China are confusing and time consuming, but will unlikely stop US suppliers from sending base metal scrap to the world's largest consumer, reported Reuters.

Participants at this year's Institute for Scrap Recycling Industries (ISRI) convention in San Diego said they would continue shipping to China, but they still had many unanswered questions about the new rule, due to take effect on June 1.