Dongguan S-King Insoles Limited has a large factory dedicated to gel heel cushions production. S-King Insoles produces a number of different product series, including heated insoles. Customers can be assured of the quality of S-King shoe height insoles. This product will go through laboratory testing, field mock-up, and field testing for workmanship quality. To prevent the growth of odor, the S-King PU insoles have been given anti-bacterial treatment. It has been proved to pass the electromagnetic compatibility(EMC) test, therefore, users are assured that the product is up to the safety standard and there are no dangerous electricity issues. S-King insoles provide a good shock absorption.

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