The technique of the adherence between Glass and metal is the special technique of heat process. It is the heat compound technique between multi-materials, such as glass with glass, glass with metal, and it is the important method in hermetical structural parts, has good electrical insulated and hermetical performance, reliable mechanical strength, and chemical stability. It has the wide application in aviation-relays, contactors, and civil electrical industry. Guizhou Tianyi Electrical Co., Ltd is the professional manufacturer for aviation relays, contactors, and civil used electrical appliance. There’s almost 40 years experience in this field, the professional technology ranks the first in China. Tianyi can make verified glass terminals, with the range from φ 1.1 ×φ 0.5~ φ 8 ×φ 5mm （glass external diameter×inner diameter）, and can manufacture different style glass adhered with 4J29 、 4J47 、 1J50 、 10#steel、electrical pure iron, 4J50 、 30CrMnSiA/T2 etc. Tianyi ever made the electrical parts for many customers, and had good performance, and quality. Your interests are always welcome!