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Nowadays, there are no added use on the colours of straws ,
except are only for decoration, but the colours are not enough
Whats a pity.However the Safe Straw will show you the ap-
proximate temperature of your drink,when straws detect your
drink is too hot ,the straw will change its colour from the side of
touching the hot drink and just like the
The PP (Polypropylene) material is added pigment colours
to make the color changed .Thereby the straws achieve the dfec-
tion of showing apptoximate temperature of the drink,in order
to avoid scald.