The Da'ao greisen-type W-Sn deposit is located in the Jiuyishan multiple granitic body.
大坳云英岩蚀变体型钨锡矿产于九嶷山复式花岗杂岩体中。
Cu-Sn alloy coating with different Sn content can be replacement plating out on iron and steel surface in a solution comprising of copper sulfate, stanous sulfate, complexant and stabilization agent.