looking for these information long long time ago
but dun even know type what in the column of the Google search
accidentally find it
check the number under your bottle!
according to the information i got
number 1
usually used as mineral water bottle, heat resistance level is below 40 Celsius
nor suggest to use it repeatedly
Number 2 & number3
cannot be cleaned easily
not recommended to used as drinking water bottle
Number 5
heat resistance is very high ( below 135 Celsius )
used as food container and water bottle
best choices among all the numbers
Number 6
known as polysterine
heat resistance 70 -95
number 7
high heat resistant
mixed of other plastic
not recommended( i forget the reason~~XD)
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