About the powder coating , it is powder , it can be coated and sprayed on some articles , and it has all over of color , and it can be antisepsis etc. For example , Pure Polyester to be used in outdoor , it can be coated on door , window , Fence etc. Epoxy-Plyester powder coating to be used in indoor , it can be coated on icebox , washing machine as well as some cookers etc. Pure epoxy powder coating to be used in antisepsis , it can be coated on some conduits .