What's the durability of a universal shelf for 0?
There is a supermarket based achievement exchange system, can be used to exchange coins and achievement points, maintenance card, maintenance card can repair universal shelf, shelf level and specific points as 0 words to durable shelf will not disappear, but can not use it, just like you did not have the goods on the shelves of general currency is a truth
Each upgrade upgrade, the durability of the fixed return to 100+ (-1) *5, for example, you rose to 2, then the durability will 105, and whether you will consume to, back in 105, that is to say, consumption to a certain extent, with the upgrade to restore durability
