عمال بناء ، لوحة دائرة كهربائية ، مصغر ، ألعاب الأطفال ، الأرقام ، الأشكال البلاستيكية ، لوحة الدوائر المطبوعة ، الإلكترونيات ، الكمبيوتر ، الحاسوب
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