2014 holiday arrangements officially released

The State Council's decision on amending the "National Festival and Memorial Day Holidays" was decided by the State Council to make the following amendments to the "National Festival and Memorial Day Holidays"

November exports increased year-on-year, trade surplus increased

In November, China’s foreign trade exports not only exceeded market expectations by double-digit growth, but also exceeded US$200 billion for the first time, a record high, and became another new milestone in China’s foreign trade development.

According to data released b

The existence and nature of respiratory hazards

The composition of normal air includes 78% nitrogen, 21% oxygen, and a small amount of inert gas. When there is a harmful substance in the air, that is, any gaseous or granular substance that does not exist in normal air and has a concentration that exceeds the range s

Sand pump selection requires consideration of several parameters

In the process of selecting the suction pump, the pump's head is not enough, because the impeller diameter of the pump is not very large. In actual use, the lift is less than 26 meters. Because the conveying distance is relatively long, the pipeline loss is large, and t

Amino acid feed for broilers

1. L-Lysine salt: The chemical name of L-lysine is L-2,6-diaminoacetic acid, white crystal. Lysine is often the first or second restricted essential amino acid due to its high nutritional requirements and low levels of feed ingredients. The content of lysine

Heavy hammer level gauge application characteristics description

The heavy hammer level gauge is mounted on the top of the silo and the sensor detection process is controlled by the display control instrument.
The heavy hammer level gauge is mounted on the top of the silo and the sensor detection process is controlled by the display

The PV policy is very "full". The reality is very "skinny"

Abstract From the end of 2012 to December 2013, in order to promote the recovery of the domestic PV industry, the state has issued a series of policies, including "Opinions on Promoting the Healthy Development of Photovoltaic In