In today's networked society, various forms of information and communication are changing with each passing day. However, the choice of communication method is more intelligent and the stability is the highest. The double flag tells you the answer. Due to the frequent and frequent nee
In order to ensure the safety of the general public on the tongue, starting from August 1 this year, China's most stringent national food safety standard "Maximum Residue Limits of Pesticides in Foods" (GB2763-2014) will be implemented, which provides statutory f
The mechanism of the action of bentonite waterproof blanket affects the mechanism of the bentonite waterproof blanket affecting us: The mechanism of the bentonite waterproof blanket We have already said that many people understand the bentonite waterproof blanket from the mechanism of action. Thi
The three-roll gate is mainly used for: management of entrances and exits of stations, wharfs, tourist attractions, ticket gate management of exhibitions, swimming halls, etc., import and export of enterprises and institutions, access control, consumption management, special passage control, etc.
The surface of the stainless steel door has a good passivation film which is resistant to corrosion and is mainly used to isolate oxygen from the air and prevent rusting. However, the stainless steel door is not rust-free, and the electrochemical reaction or chemical reaction occurs on the metal sur
In recent years, the LED market has been flourishing, but in recent years, various situations have occurred frequently, and the market is smouldering. Now, with the maturity of LED luminaires, the market has begun to change. Today, I will introduce the principle and characteristics of the new
As the name suggests, this battery uses liquid phosphoric acid as the electrolyte, usually in a silicon carbide matrix. The operating temperature of a phosphoric acid fuel cell is slightly higher than that of a proton exchange membrane fuel cell and an alkaline fuel cell, and is located at about 1