0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 华北重碱 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 (500) 0 500 1,000 1,500 2,000 华北氨碱法利润 2020 2021 2022 2023 2024 2025 (1,000) (500) 0 500 1,000 1,500 2,000 2,500 华北联碱法利润 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 华北轻碱 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 6 0 6 5 7 0 7 5 8 0 8 5 9 0 9 5 100 纯碱开工率（%） 2020 2021 2022 2023 2024 2025 0 5 0 100 150 200 250 纯碱厂库+交割库存 2020 2021 2022 2023 2024 2025 ...