sparlampe, การประหยัดพลังงาน, หลอดไฟ, ลูกแพร์, รุ่น, ด้าย, หลอดไฟฟ้า, เป็นมิตรกับสิ่งแวดล้อม, แสง, โคมไฟ, พลังงาน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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