Recently, the electronic control of vehicle parts has been steadily increasing and the ECU plays a key role in this. Our masking tape for printed-circuit boards can be used during the manufacturing process. Also, quantities and processes can be managed with the label printing system. The semiconductor chip is protected from heat by the semiconductor encapsulating resin. The board surface can be protected from moisture, dust, and impact with the liquid insulation vapor retardant sealing material. The casing can be sealed with the high performance sealing material <EPT SEALER> and <SEAL-SAVER>, and its internal pressure can be regulated easily and reliably with the film TEMISH®.