What about Mengzi Mining and Metallurgy Co., Ltd.?

This company is very famous in Mengzi, and it is the boss of Mengzi industry (Honggang is in recession now). Subordinate indium zinc smelter, white cattle factory silver mine, etc. And the national finance accounts for a large proportion of Mengzi's fiscal revenue. Among them, indium produced by indium-zinc smelters accounts for 80% of the national output. The consumption level of Mengzi is relatively low in large and medium-sized cities, and the monthly living expenses of 1000 are enough (including rent, meals and transportation expenses).