In order to achieve zero leakage inside and outside the valve seal, save energy, protect the e...

Introduction Water quality detector, a professional instrument for analyzing the content ...

Model NO.: WK-220H ...

There is a close relationship between the use of medicines and various uses. The right medicine can ...

Recently, Changan Automobile and Ford Motor Company have reached an agreement to jointly establish...

I. Physical and chemical properties of silver Silver Ag is rare in the earth's crust, accounting...

Guidance: Mainly used in coal mining, roadways, tunnels, ground ditching and other project...

    Thiourea, also known as sulfurized urea, white lustrous rhomboid crystal, tastes bitt...

Angang sintering plant, Qidashan beneficiation plant, steel companies Jiuquan concentrator, are use...

At the end of August, major enterprises of construction machinery successively issued semi...

When the required joint strength refractory metals but metals usually take soldered connection, the...

Copper is one of the earliest human discovered an ancient metal, and began to use copper as early as...