เสา, นก, เกาะอยู่, ลวด, กิ้งโครง, ไฟฟ้า, สายเคเบิ้ล, พักผ่อน, เหล็ก, ท้องฟ้า, อุตสาหกรรมการก่อสร้าง
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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