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he door if it was frozen before you operate in winter or somelow temperature areas, it is better for you to open it manually toavoid accidents.5)Shinilion Rolling Commercial Door have self-purificationfunction, it is convenient for users to clean.
6.After-sales service:
1) We provide the damaged components freely during theguarantee period, and the freight beard by the client.
2) We provide the components at our cost price beyond theguarantee period.
