Microbial method for leaching copper from tailings

Bacterial metallurgy technology due to its low cost and environmental protection friendly and become a hot research, especially for complex refractory ore conventional art (such as a single metal ore more compounds and multi-state metal composite mineral), low grade ore topsoil, Abandoned mines hav

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The mystery behind the Mercedes-Benz sales integration

On July 27th, a joint statement of Daimler and BAIC put the cooperation and negotiation of the two partners in the sales field to the surface. In the lucrative sales field, it is normal for Chinese and foreign shareholders to compete for the game. However, disputes such as Mercedes-Benz

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This kind of popular car has a very high hedge rate!

Reading: There are hot nature and upsets, there is no shortage of good cars, but also appears to have personality, in addition to attract those who have love at first sight of these "personal person", there are some to choose not to follow the crowd to buy "street car"

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Check and eliminate suction brake air brake failure

The cause of air brake failure: insufficient air pressure in the air cylinder, excessive free stroke of the brake pedal of the suction truck, insufficient air pressure in the brake air chamber, excessive clearance or poor contact between the brake shoe of t

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Threaded valve applications and characteristics

Stainless steel gate valve, Z15W gate valve, threaded gate valve, threaded gate role: gate valve can only be fully open and fully closed function, can not be adjusted and throttling Suitable medium: oil, water, steam and other valve applications: chemical, petrochemical, petroleum, papermaking, m

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