This report shows the value of knowing your processes inside a company. The methods used in to do this have been first of all through process mapping and for in depth study, process cards were used to measure the process time and total lead time. This showed the location of bottlenecks and overall process capacity. With the data collected, suggestion on how to decrease storage, throughput time and total lead time is given. The study has been conducted at Intelbras in San Jose, Santa Catarina, Brazil. Intelbras is a telecommunication company which produces telephones, security cameras and switchboards. Two production processes is studied, the Telefone Sem fio, SFL, which produce cordless telephones and Central, CAL, which produce switchboards. Through simulation this paper shows improvement suggestions on how to better handle the flow of material by introducing sequencing into the production and FIFO in the storage handling, everything in order to decrease total lead time and increasing throughput time. Process mapping has proved to be a great tool in order to understand how a production process works and integrates with other departments. In supplement of process cards, valuable data is collected and used for analysing further improvements such as making a balancing program and calculating where and how big buffers is needed at different processes.