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How are the shapes of fireworks made
Fireworks add a festival to people’s life, especially during festivals, it increases the atmosphere. Method stepsColor.The color of fireworks is a different ratio of metal or its compounds burning, resulting in flame color reaction, and then produce diffeRead more -
Preparation of electroplating grade active copper oxide powder
Using pure copper as raw material, active copper oxide powder was obtained through ammonium bicarbonate – ammonia water dissolved copper, ammonia removal at atmospheric pressure and roasting.The properties of the activated copper oxide powder were charactRead more -
non-renewable resources
Non-renewable resources refer to the natural resources that cannot be regenerated in a long time after human exploitation and utilization.It mainly refers to all kinds of minerals, rocks and fossil fuels in nature, such as peat, coal, oil, natural gas, meRead more -
About Renewable energy
Renewable energy refers to a kind of energy that can be continuously used and recycled in nature, such as solar energy, wind energy, water energy, biomass energy, ocean energy, tidal energy, geothermal energy and so on.With the emergence of the world oilRead more -
The Second Revision of the Measures for the Administration of Hazardous Waste Business Permits
Article 13 The term of validity of the comprehensive operation license for hazardous waste is 5 years.The hazardous waste collection operation permit is valid for 3 years.If the hazardous waste operation license expires and the hazardous waste managementRead more -
The Second Revision of the Measures for the Administration of Hazardous Waste Business Permits
(Promulgated by Order No. 408 of The State Council of the People’s Republic of China on 30 May 2004, revised for the first time in accordance with the Decision of The State Council on Amending Some Administrative Regulations on 7 December 2013 and revisedRead more -
Antiseptic wood :ACQ and CCA
We commonly use two kinds of antiseptic wood preservatives, which are the traditional CCA wood preservative and the new ACQ wood preservative. The biggest difference between the two is that the traditional CCA preservatives in addition to the strong antiRead more -
3 The treatment of wood preservative
Wood preservative treatment method — hot and cold tankUse the principle that heat bilges cold to shrink, make the gas inside wood heat bilges cold to shrink, produce pressure difference, so that overcome liquid permeate resistance, be about wood is heateRead more -
2 The treatment of wood preservative
Wood preservative treatment method – diffusion methodAccording to the principle of molecular diffusion, with the help of water in wood as the carrier of drug diffusion, drug diffusion from high concentration to low concentration, diffusion to the deep wooRead more -
1 The treatment of wood preservative
Because of the relationship between the environment and the wood itself, it is easy to make the wood easy to rot and insects, which requires us to carry out wood preservative treatment. So what are the methods of wood preservative treatment?Methods/stepsRead more -
What is copper hydroxide?
What is copper hydroxide? What’s the difference between copper hydroxide and copper carbonate? What is verdigris?Copper (II) hydroxide is a hydroxide of copper, chemical formula Cu(OH)2. Copper hydroxide is a light greenish blue or blue-green solid. SRead more -
How to use copper oxide powder in ceramics?
How to use copper oxide powder in ceramics? How do you choose the best CuO for your specific needs? Importance of quality of copper monoxide in ceramic production process.Copper oxide – used on potteryHow to use copper oxide powder in ceramics? Cupric oRead more
