Group 1 - The core viewpoint of the article indicates that China's refined copper production in August 2025 reached 1.301 million tons, representing a year-on-year increase of 14.8% [1] - In August, only three smelters underwent maintenance, while two new smelters in East China continued to ramp up production, contributing to a slight month-on-month increase in refined copper output [1] - The high sulfuric acid prices in August helped offset smelting losses, and the processing fees for copper concentrate showed a trend of rising and then falling, which also supported the production levels [1] Group 2 - In September, five smelters are scheduled for maintenance, affecting a total of 1 million tons of crude smelting capacity, leading to an expected production decrease of 14,000 tons compared to August [1] - Apart from routine maintenance, a significant reduction in production is anticipated due to tight supply of anode copper, which is expected to impact 60% of the surveyed sample, resulting in a substantial decline in September output [1]