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Bamboo chopsticks healthy cycle of six months, but most families use chopsticks often exceeding six months, or even far exceed, this will be very healthy.
My design is done in a circle near the top chopstick induction materials, when used once when you open, the sensor material will begin timing when used to five months or so, the sensor material will gradually turn red, so to remind users to replace chopsticks.
Jian Xu Xin He Deliang Hao Beibei Zhu