婷婷成人一区在线观看.老司机av无码不卡在线观看.亚洲欧洲综合成人av一区.伊人阁福利视频.国产自国产自愉自愉免费24区.日韩精品无码一区二区三区久久久.亚洲精品高清国产一线久久.色伊人久久大香线蕉综合爱

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.