Cleaning Solution For Semiconductor
Cleaning runs throughout the semiconductor manufacturing. The cleaning of semiconductors runs through the entire semiconductor process. From the silicon wafer manufacturing, it is necessary to clean the polished silicon wafer to remove surface contaminants, remove photoresist, wet etching, CVD, etc. in the chip preparation, and then to the final material quality inspection. Every step needs to be cleaned to ensure that the next step is free from impurities and maintain the yield of the product. At the same time, as the chip process continues to shrink, the number of cleanings required is increasing. According to statistics, the number of cleaning processes accounts for one-third of the entire chip manufacturing process, and is an important part of chip manufacturing. Very low surface tension and viscosity, it can be well dispersed and spread into various gaps, with good scouring and wetting cleaning effect.
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Russian President Vladimir Putin and Ugandan President Yoweri Museveni discussed issues of interest to Uganda during Putin’s official residence outside Moscow, involving cooperation in the fields of military technology, mechanical engineering, energy, agriculture, and infrastructure construction.
Putin said: "I am very pleased with your visit. I think that we can seriously discuss the direction of cooperation and establish a collaboration mechanism today. There are many cooperation directions. I know that we have each other in the fields of machinery manufacturing, infrastructure development, energy and military technology. Interest in cooperation."
Yoweri Museveni said Uganda is interested in these issues.
Uganda is located in eastern Africa and has a population of approximately 33.4 million. Uganda is rich in many minerals: there are many copper, gold, tin, uranium, magnetite, antimony, bismuth, chromium ore, tungsten, antimony, zirconium, hafnium, apatite (largest in East Africa) and construction materials. There is also a wealth of hydropower potential. Oil and gas fields have been discovered in western Uganda. According to the latest estimates, there are actually reserves of 600-800 million barrels.