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Dec 30, 2014 · Use invulnerable materials for window glasses. If using common glass, necessary measures shall be taken to prevent contamination of broken glass to raw materials, packaging materials, and food. 4.2.4.4. If the windows are set up with windowsills, it shall be in the structure that could avoid accumulation of dust and is easy to clean.CH14059GAIN Report Number: China - Peoples Republic Dec 30, 2014 · Use invulnerable materials for window glasses. If using common glass, necessary measures shall be taken to prevent contamination of broken glass to raw materials, packaging materials, and food. 4.2.4.4. If the windows are set up with windowsills, it shall be in the structure that could avoid accumulation of dust and is easy to clean.CH14059GAIN Report Number: China - Peoples Republic Dec 30, 2014 · Use invulnerable materials for window glasses. If using common glass, necessary measures shall be taken to prevent contamination of broken glass to raw materials, packaging materials, and food. 4.2.4.4. If the windows are set up with windowsills, it shall be in the structure that could avoid accumulation of dust and is easy to clean.

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