1.1 Conventional single crystal silicon and polysilicon technology We know that single crystal silicon is generally obtained by the Czochralski method (CZ method), and the single crystal seed crystal of a specific crystal orientation is used for seeding, and the target crystal orientation is obtaine

As a new type solar renewable resources are more and more attention, but during the development of the photovoltaic system, solar array by experiment since sunlight intensity, the influence of the ambient temperature, the experimental results in high cost, development cycle becomes long . Simulator

Peter Salek, chairman and president of Michelin Tire North America, said that the economic downturn has not affected Michelin's production increase plan, and that the international construction industry cannot afford the support of some large tires. Despite the current global economic re

The research project on the development and industrial application of polypropylene in the kettle reactor jointly undertaken by Sinopec Yangzi Petrochemicals Co. , Ltd. and Sinopec Beijing Chemical Research Institute was approved last week by the scientific and technological achievements organized

To ensure the implementation of the "Twelfth Five-Year Plan" process, the speed of approval of some investment projects has been accelerated. The investment plans for these projects will drive the recovery of the engineering and steel industries and increase the market demand for iron ore

The scavengers were stopped by public transport: The bus company apologized to the elderly diesel generators | diesel generators price / 2012-09-21 On the evening of the 17th, a scavengeable old man in Fuzhou wanted to take a bus and was even refused by two buses. At present, two drivers hav

â–  The main character Buick's first domestically produced SUV, Angkola ENCORE, officially showed itself to young consumers. On Wednesday, Angola ENCORE launched four models with a price range of 149,900 yuan - 196,900,000 yuan. It will be booked at more than 500 4S shops in Buick.

On June 25, Chery Motors suddenly announced that the position of General Manager of Chery Automobile Sales Corporation had been adjusted. The position was taken over by former general manager Zheng Zhaorui of Qiyun Automobile Sales Co., Ltd., and former general manager Ma Dezhao was transf

Abdolhossein Bayat, Iran's general manager of the National Petrochemical Company and Iran's Deputy Minister of Petroleum, said in Tehran recently that Iran plans to increase its petrochemical output by more than 5 million tons in the Iranian calendar year ending on March 20 next year. The

● Dongfeng Cummins Regional introduction Xiangfan night scene Xiangfan Department of Xiangyang, Fancheng two cities together. It is one of the oldest areas in China. As far as 600,000 years ago, mankind has thrived here. Xiangfan has been a traffic fortress since ancient times and is k