Treatment charges for lead concentrates fell sharply in April after the arbitrage between Shanghai and London prices encouraged more imports into China, sources said.
Fastmarkets' lead spot concentrate TC, low silver, cif China assessment was $55-65 per tonne on April 30, a 20-month low and down from an $80-100-per-tonne range in March.This is in part because of a spike in container freight rates, which are now double or triple what they were toward the end...