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In recent years, China's new energy vehicle industry has developed rapidly. The key resources such as nickel, cobalt and lithium, as critical raw materials for the industrial development, has seen a surge in demand. Ni, Co, and Li resources in China are relatively scarce, subject to the mineral export control of the main supplying countries. The contradiction between resource supply and demand is becoming more and more prominent. Its necessary to expand diversified resource supply channels by importing high-quality Ni-Co-Li recycled materials. From the perspective of life cycle and circular development, based on the production process, environmental benefits and standardization status of Ni-Co-Li recycled materials in China, this paper interprets and analyzes the existing standards for recycling resources in China. With regard to commodity codes, identification methods and import, export tax rates, carbon footprint accounting and recovered material standard, this paper puts forwards to practical suggestions, and provides guidance for recycling resources imports in China and supply chain security. [ABSTRACT FROM AUTHOR]

Objective To explore the expression of TRPV2 and its clinicopathological significance in oral squamous cell carcinoma (OSCC). Methods Immunohistochemistry and western blot were used to detect TRPV2 expression level in OSCC; Pearson χ² test to analyze the association between TRPV2 expression level and clinicopathological features of OSCC patients; log-rank test to analyze the effect of TRPV2 on survival. Bioinformatics method was used to explore the potential biological function of TRPV2, and immunohistochemistry to verify the relationship between TRPV2 and macrophage infiltration level. Results Immunohistochemistry and western blot confirmed that TRPV2 was highly expressed in OSCC (P < 0.05). TRPV2 expression was significantly correlated with T stage, tumor histological grade and poor prognosis (P < 0.05). Bioinformatics method found that TRPV2 participated in PI3K/AKT pathway and regulated the level of immune cell infiltration; TRPV2 expression had strong positive correlation with the macrophage infiltration level (R = 0.562, P < 0.001). Conclusion The expression of TRPV2 is highly expressed in OSCC and associated with poor prognosis, and may take part in the occurrence and development of OSCC by regulating immune response and PI3K/AKT pathway. [ABSTRACT FROM AUTHOR]