2024年锦湖轮胎原材料涨价但单位直接材料成本下降遭问询 青岛双星回复

Core Viewpoint - Qingdao Double Star (000599.SZ) provided a detailed explanation regarding the apparent contradiction of rising raw material procurement prices in 2024 while experiencing a decrease in unit direct material costs in response to the CSRC's inquiry letter [1] Group 1: Raw Material Price Changes - In 2024, the procurement prices for natural rubber and synthetic rubber from Kumho Tire increased by 29.08% and 13.99% year-on-year, respectively [1] - Despite the increase in rubber prices, the unit direct material cost decreased by 5.93% [1] Group 2: Factors Influencing Cost Changes - The decrease in unit direct material costs is influenced by three main factors: 1. The decline in prices of other raw materials such as tire cord, carbon black, and steel wire, which fell by 8.42%, 2.97%, and 9.44% respectively, offsetting the impact of rising rubber prices [1] 2. The lag effect in cost transmission, where the average time from procurement to cost recognition is 3-4 months, meaning that the raw materials consumed in 2024 primarily correspond to purchases made between September 2023 and August 2024, a period with relatively moderate rubber price increases [1] 3. Exchange rate fluctuations, with the average exchange rate of the Korean won to the Chinese yuan resulting in a decrease of approximately 2.95 percentage points in unit costs when calculated in RMB [1] Group 3: Cost Accounting Practices - The company adheres strictly to enterprise accounting standards in its cost accounting system, employing a weighted average method for inventory valuation and maintaining a standardized cost aggregation process [1]