Suga Test Instruments provides weather resistance, corrosion, and color measuring equipment. They are required to manufacture lamps, such as joining different materials such as glass and metal with a flame of 1000 °C or higher. In order for the lamp to emit light correctly and light up, the purity of the enclosed gas must be accurately controlled. Titanium material is lightweight and has corrosion resistance, but it is difficult to process and requires skill in bending and welding.