Door lock is vital for home guard, sochoosing a good lock is the key thing, Onlense tells you as follows. Thereare A, B and C level locks core mainly, and B level mortise is the best quality,sure the price is higher, but A level mortise is taking up the bigger marketingamount now, this is because of the profit, then they could not be good in stoppingthieves, people could judge the door lock by marble lock core rows. Electric door lock has aluminium alloy、stainless steel and coopermaterials, and the alloy material locks are popular, they are not so strong ordurable, next is the stainless steel door lock, and cooper locks are the best.However, when using the same materials, locks products are also very differentwith different work processes and materials components. Generally speaking, thefine lock has smooth lock body and better seam and clearing voice of opening. If locks have been used for a long time,the lock core would be worn gradually, and this is not good for securityprotection, after 4-5 years using, people need to check the lock carefully andpay attention to the mortise condition and its other parts, avoiding losscoming!