亚洲中文字幕在线人妻_日韩乱码人妻无码中文视频下载_久久久无码精品一区波多野_欧美成A人片免费观看久久

In 2014, the factory was invested and built in Dagang, and was officially put into operation at the end of 2014.

At present, the production capacity of acid dyes reaches 10000 tons. Especially the main black dye, it is a brand new production equipment and environment designed based on the combination of the production and operation of Sanhuan in the past 20 years and the world's most advanced production processes and equipment.

A diversified sewage treatment system has been designed as a whole, including various treatment units such as pre-treatment, biochemistry, and MVR. Ensure daily production sewage treatment meets discharge standards.

Comprehensive atmospheric absorption and monitoring. Conduct random sampling and testing at various key points every day to ensure that exhaust emissions meet standards throughout the day.