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استانداردهای وزارت صنایع شیمیایی به ندرت به‌روزرسانی می‌شوند؛ hg20570 استاندارد سال ۹۵ است

2016-07-20View Original

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آیا کسی متوجه شده که چه استانداردهایی می‌توانند جایگزین ۲۰۵۷۰ شوند؟
Reply #22016-10-27
همان سؤال: بیش از ۲۰ سال گذشته، چرا استانداردها هنوز به‌روزرسانی نشده‌اند؟

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