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75ml Round Capsule Glass Bottle

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FAQ
What temperature range does high borosilicate glass withstand?
It can withstand 450℃ for extended periods when dry-heated, and does not soften even at short-term exposure to 600℃; it can withstand temperature differences of ≥150℃, with laboratory data showing a maximum of approximately 200℃.
How to clean and remove tea stains?
Warm water + neutral detergent + soft cloth; do not use steel wool or hard-bristled brushes, as these will scratch the surface and create micro-cracks, making it prone to cracking when heated again. Stubborn tea stains can be soaked in baking soda or citric acid and then wiped with a soft cloth.
Can it be frozen? Will a household refrigerator crack if it reaches -18℃?
Yes, it's possible. National standards require that after freezing at -41℃ for 24 hours, the container should not crack when immersed in 40℃ water within 1 minute. A household refrigerator will handle this without issue. Note: Do not fill the bottle completely; leave room for expansion.
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