How to remove patinaCopper exposed to the air for a long time is easily oxidized to rust, the following methods to remove rust spots1. Heating method. This method is mainly aimed at the shallow corrosion of iron money. The main component of rust is ferrous oxide,the molecular structure is relatively

Several points of attention in the use of copper doorsThe copper door is sturdy and durable, but it must be well maintained during use. The following points should be noted during the use of the copper door：1. Don't often open the door lock with water-stained hands to avoid discoloration of the door

The difference between copper doorsBronze doors, historically not only a symbol of identity but also a strong barrier to protect the safety of the mansion, today's modern society has been introduced into villas and apartments. .So what are the bronze doors? What's the difference on the material?Copp