For manufacturers who produce products that have a kind / type that much physically but has the same shape and size should always be careful with the product mix with each other. Because if that happens it will cause the customer's claim and can lead to customer trust will decrease. Therefore, the nonconforming product wastage must be addressed.
Error on the product that is incompatible with the requested specifications will impact sustainable. As an example the case of the mobile phone companies who book the type of resistive plate resistor with value of 10 Milli ohms, in the same physical condition was the same resistive plate with resistive plate with a value of 5 Milli ohms and the mobile phone companies get 5 Milli ohms. If the check passes in a sense is not detected until the production process, the next thing happens is not functioning properly due to mobile phones from the factory resistor supplier's specifications. If it so the loss will be suffered by the mobile phone companies because their products would have to be discarded or thrown into the market if forced to reduce the customer trust.
