[Ferro-alloys.com]China Ministry of Environmental Protection released recently and took it as a technical guidance document. This document was drafted by Chinese Research Academy of Environmental Sciences. It was based on current technology development as well as application status, and it could be used as reference technical data of pollution prevention work in EMM industry. In this document, clean production technology, water-pollution control technology, solid waste disposal technology and noise-pollution control technology were described in detail

On the other hand, some new pollution –prevention crafts were involved, including selenium-free electrolytic technology, chromium-free passivating process and air oxidation iron removal technology.

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• [Editor:Mike.zhang]