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The 1981 design was the most widely used plate number design, in production from 1981 to 2014. LTO issued the numbering format LLL-DDD for automobile vehicles, and LL-DDDD and DDDD-LL for motorcycles. Color-coded year stickers appeared in 1982, based on the license plate's color scheme. Stickers for vehicle classification appeared in the same year.
Electroless copper plating. Electroless copper plating is a chemical process that deposits an even layer of copper on the surface of a solid substrate, like metal or plastic. The process involves dipping the substrate in a water solution containing copper salts and a reducing agent such as formaldehyde. [1]
Copper electroplating. Copper plating on aluminium. Copper electroplating is the process of electroplating a layer of copper onto the surface of a metal object. Copper is used both as a standalone coating and as an undercoat onto which other metals are subsequently plated. [ 1 ] The copper layer can be decorative, provide corrosion resistance ...
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Verdigris / ˈvɜːrdɪɡriː (s)/ [1] is a common name for any of a variety of somewhat poisonous [2][3][4][5] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition. [6]: 132 Once used as a medicine [7][8] and pharmaceutical preparation, [9]: 176 [10] verdigris occurs naturally ...
This new design extended the copper plating from 15–17 mm down the blade to approximately 55 mm, and it increased the thickness of the copper to 3.0 mm from the 2.5 mm used on the standard cathode. [16] The new cathode plate design was tested in the CRL refinery in Townsville and at Compania Minera Zaldivar in Chile. [16]
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