This paper describes the methods of controlling the frame quality in terms of process design, mould design, control of deformation and defects from welding surface treatment, etc.

Strip surface detection is one of the basic process of strip quality control, existing methods for strip surface detection couldn't meet the accuracy and real-time capability for industrial spots.

This paper introduces a new chemical colouring technology for copper and its alloy surface to colour a Verde green with respect to technical process, prescription, quality control and so forth.