Unlocking the Sustainable Development Path of China’s Nonferrous Metal Industry Based on Collaborative Innovation

Figure 8

Breath and depth distributions of interprovincial innovation collaboration. (a) The first stage. (b) The second stage. (c) The third stage. Note: AH: Anhui; BJ: Beijing; FJ: Fujian; GS: Gansu; GD: Guangdong; GX: Guangxi; GZ: Guizhou; HI: Hainan; HE: Hebei; HA: Henan; HL: Heilongjiang; HB: Hubei; HN: Hunan; JL: Jilin; JS: Jiangsu; JX: Jiangxi; LN: Liaoning; IM: Inner Mongolia; NX: Ningxia; QH: Qinghai; SD- Shandong; SX: Shanxi; SN: Shaanxi; SH: Shanghai; SC: Sichuan; TW: Taiwan; TJ: Tianjin; XZ: Tibet; XJ: Xinjiang; YN: Yunnan; ZJ: Zhejiang; CQ: Chongqing.

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