First: technology, the technology of copper door includes carving, welding, painting and so on. Before buying, you must pay attention to whether the process of the copper door is meticulous and whether the welding between the copper door and other parts is firm. The technological level of a door first shows the strength of this product.
Second: buying a door is also buying a lock. Lock is a very important part of the door. Now there are many kinds of locks on the market, such as three-row anti-pick lock, heaven-earth lock, quick lock, crescent anti-pick lock and so on. Consumers can choose better locks according to their own needs and economic ability.
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