The entrance key is lost on the street and there is no need to change the lock cylinder

Call 114 to find a lockpicking company to deal with it. Or find a way to find the key. See if you forgot where you lost the key.

You don't want to lock it, just open it, buy a six-wheel grind and change it into a turn OK. If you want to lock it, give 10-20 yuan to find a key to help you open it.

The entrance door is the first door to enter the house, and it is also called the anti-theft door because of its high anti-theft performance. Entrance doors are mainly divided into five types according to the material: iron doors, stainless steel doors, copper doors and armored doors, among which iron doors and stainless steel doors are medium in performance and price, suitable for general residential use; Copper doors have good fireproof, anti-corrosion, anti-prying, and dust-proof performance, but the price is high, and it is suitable for high-end residences such as villas. >>>More

I have installed a Maxim's security door in my home, and now I have lost my key, what should I do? If you don't have any other spare keys, you'll probably have to find a locksmith... >>>More

Something like an axe for a safe can't be broken, and the most effective way is to find a manufacturer or a locksmith!!