Lock is used to lock the door to prevent the door from being opened devices, such devices may be mechanical, it could be electric, the electric power needs.
classification:

Hotel lock, apartment locks, smart locks, fingerprint door locks, glass door locks, etc. for use in various electronic locks.
Locks classification lot, on various occasions to lock requirements are not the same, the average family in general with security locks, safe and relatively cheap price; in some high-end places and confidentiality agencies will use the password lock, lock, security very expensive; many public occasions use glass door, so it would be more extensive use of glass door.

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Second, on the price of the product: part online price for reference only, specific price please call the seller.
Third, with regard to logistics: specific logistics methods and fees determined by the buyer and seller negotiation.