If you have any needs or questions, please leave a message, and we will reply to you as soon as possible.
Processing smelting and refining gold World Gold Council The Miller process is rapid and simple but it produces gold of only about 99 5 percent purity The Wohlwill process increases purity to about 99 99 percent by electrolysis
Chat online:Please Click Here
Address:High-tech Zone , ZhengZhou , China
Please Click Here
High-tech Zone , ZhengZhou , China