·On ​​the 6th, Deyang issued free environmental protection signs for motor vehicles
It was learned from the Deyang Environmental Protection Bureau's motor vehicle environmental protection signing preparation meeting that with the consent of the municipal government, in conjunction with the actual situation of the motor vehicles in Deyang City, Deyang City will start the environmental protection of motor vehicles in the city from May 6, 2014. The inspection conformity mark was issued for the first time. At that time, the city's motor vehicle environmental protection mark issuance window, the government administration hall and the traffic police brigade vehicle management office will issue the motor vehicle environmental protection mark to the owner free of charge.
Acids exist universally in our life. There are both numerous kinds of natural acid compounds with biological functions and massive synthesized acids which are used in many ways.
In industry
Acids are fundamental reagents in treating almost all processes in today's industry. In the chemical industry, acids react in neutralization reactions to produce salts. For example, nitric acid reacts with ammonia to produce ammonium nitrate, a fertilizer. Additionally, carboxylic acids can be esterified with alcohols, to produce esters. Acids are often used to remove rust and other corrosion from metals in a process known as pickling. They may be used as an electrolyte in a wet cell battery, such as sulfuric acid in a car battery.
In food
Many acids can be found in various kinds of food as additives, as they alter their taste and serve as preservatives. Phosphoric acid, for example, is a component of cola drinks. Acetic acid is used in day-to-day life as vinegar. Citric Acid is used as a preservative in sauces and pickles. Certain acids are used as drugs. Acetylsalicylic acid (Aspirin) is used as a pain killer and for bringing down fevers.
Acid catalysis
Acids are used as catalysts in industrial and organic chemistry; for example, sulfuric acid is used in very large quantities in the alkylation process to produce gasoline. Some acids, such as sulfuric, phosphoric, and hydrochloric acids, also effect dehydration and condensation reactions. In biochemistry, many enzymes employ acid catalysis.
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According to reports, the environmental protection classification mark is the certificate that the motor vehicle meets the national vehicle pollutant discharge stage discharge standard. The scope of issuance is within the validity period of the security inspection except for motorcycles, low-speed trucks and tricycles in Deyang City. In-use motor vehicles.
The environmental classification mark has two categories: green mark and yellow mark, and its expiration date is consistent with the vehicle safety annual inspection cycle. “There is no charge for applying for the environmental protection classification mark. The principle of voluntary application by the owner is also issued for the first time.†The relevant person in charge of the Municipal Environmental Protection Bureau introduced that from May 6th, Deyang citizens only need to carry the vehicle’s driving license and photocopy and vehicle registration. Certificates and photocopies and the “Application Form for the Issuance of Environmental Protection Signs for Motor Vehicles†shall be handled according to the registered address of the driving license and the time, place and manner as specified by the environmental protection bureaus of the counties (cities, districts). "If the environmental protection mark is damaged or lost, the owner can use the motor vehicle driving license to replenish the original application window," the person in charge explained.