Quartzite silicon feedstock include glass, quartz sandstone, vein quartz, synthetic quartz silica sand processed and deposited from chert weathering natural quartz sand (i.e., silica sand). Silica represented by sandstone has a high silica content. The beneficiation process mainly involves crushing
In early May, a black Audi A6 slowly stopped in front of a reporter somewhere in the south of Zhejiang Province. Zhang Ming from the north (a pseudonym) is burly, with a pair of black lenses on his glasses, flipping upwards, quite a bit of fashion. Zhang Ming’s identity is the vice preside
As a commodity, mineral products have many things in common with the sale of other commodities. For example, buyers and sellers need to sign a sales contract to determine the price of the product, the quantity of the product, the quantity of delivery, the date, and the establishment of compensation
At present, all cities and municipalities in the Pearl River Delta have issued an announcement on the implementation of the national V emission standards for motor vehicles. The official implementation time is December 31, 2015. After the delay to the end of the year, the second-hand car dealers in
In the process of driving five commercial vehicles, the role of each light is extremely important. For example, when a turn is needed, the turn signal can promptly remind the rear vehicle which direction it needs to turn to avoid a collision. Accident. When
[Chinese instrument network meter patent] creative limit, instrumentation invention. Today, we introduce a national patent for invention invention - a closed type ultrasonic water meter and heat energy meter. The patent was applied for by Hunan Changde Brand Water Meter Manufacturing Co., Ltd., and
On March 1st, the Ministry of Industry and Information Technology issued the "Regulations for Photovoltaic Manufacturing Industry (2018 Edition)", emphasizing the strict control of new photovoltaic manufacturing projects that simply increase production capacity. Among the conditions that
According to CMEN, the price difference between LED lights and energy-saving lamps is rapidly narrowing. Compared with traditional light sources, LED lamps have the advantages of low energy consumption and long service life, but their high price has become an important reason for hindering the expl