1. Oxide film for bottle body, inner cap and outer cap
(1) The thickness of the oxide film shall not be less than 6 microns
(2) The corrosion resistance time of the oxide film shall not be less than 30s
2. Health index of bottle body, inner lid and outer lid
The main detection of four elements: zinc, lead, chromium, arsenic
3. Compressive strength of bottle
5L shall be greater than 700N, and 3L shall be greater than 250N
4. Sealing ring
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