Under the current economic situation, green development, resource-saving and environment-friendly society lies in increasing green technical innovation capacity, which relies upon internal self-search, and also upon openness to gain global technical overflow. This paper selects 17 nations as China's technical overflow, taking green patent as green technical innovation indicators, employs China's provincial panel data of 2007 to 2017 to establish a spatial Dubin model which serves to check the impacts of global technical overflow on China's green technical innovation. China's provincially environmental technical innovation is characterized by outstanding spatial clustering, with local closely related to its vicinity geographically. Global technical overflow from imported trading largely promotes the green technical innovation where the imported is. Global technical overflow from bidirectional FDI plays a negative role, but internal research capital stock does positively. Interaction between OFDI and internal research capital stock enhances the green technical innovation. 

Tudaban Pb-Zn deposit is located in the transition between Qilian orogen and Dunhuang block, and hosted at the 2nd member of the 2nd formation, Archean-Proterozoic Dunhuang group. The structure and strata are two key factors in the formation of deposit. The EW-orientated fault zone is a major control of mineralization. Pb's concentration is closely related to Dunhuang group, Zn also has been overlapped by post granite hydrotherm. The import ore-finding indexes include the 2nd member of the 2nd formation, Dunhuang group, altered fracture zone, yellow jarosite zone on surface and gossan.