PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoExplain how dioxins are formed? Which plastic type they are linked to and why they are harmful to humans?
When is burned, are released, which are one of the most hazardous chemicals known to .
PVC (resin code #\(3\)), PS (resin code #\(6\), also known as Thermocol), and PC/ABS (resin code #\(7\)) are the three .
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