發送短信

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 _____      ______   _    _    _    _    __   _   
|  __ \\   /_   _// | \  / || | || | || | || | || 
| |  \ ||   -| ||-  |  \/  || | || | || | '--' || 
| |__/ ||   _| ||_  | .  . || | \\_/ || | .--. || 
|_____//   /_____// |_|\/|_||  \____//  |_|| |_|| 
 -----`    `-----`  `-`  `-`    `---`   `-`  `-`

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發送短信 : Quick design tool for welded circular hollow sections joint using MS Excel