Any agent that kills or inhibits the growth of a pathogen, but does not hinder the normal growth of the plant, is collectively referred to as a bactericide. How to use fungicides efficiently in production is of great significance for increasing crop yield. Let's talk about the key tech…

In the eyes of most people, the value of the lock is very common for the school family, a few dollars cheaper, but only a few dozen yuan.

With the rapid development of domestic lock technology, China has become the world's largest producer and consumer of locks. The domestic loc…

At the moment, it is the vegetative growth of cotton that has entered the peak period and gradually turned to the stage of reproductive growth. It is also a period of absorption and absorption of fertilizer and water. After June 4th, there are many rainy days, the air humidity is very high,…

It is a hot topic in the industry to see when the price of iron ore that has been soaring will be able to brake. Yesterday, Lange Steel analysts said that it is expected that the price of the mine will stabilize in March due to insufficient growth momentum. Previously, due to the strong expe…

Recently, Wang Zegao, a specially appointed researcher of the School of Materials Science and Engineering of our school, has cooperated with Professor Mingdong Dong of Aarhus University in Denmark and Professor Xiao Cheng Zeng of the University of Neb…

Japan's new standard for seamless steel pipes Shandong Seamless Steel Tube Factory
JIS G3442-1997 Galvanized steel pipe for general pipelines.pdf
JIS G3442-SGPW.rar
JIS G3443-2004 Coated Steel Pipes for Water Pipelines.pdf
JIS G3443-2004. Coated Steel Pipes f…

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