?six types for contacts: 4, 7,10,19,32,5 cores,etc. ?locking by screws; ?with five key ways on the installation board, it can be five coupled types through changing the position relative between the key way on the installation board and the orientation key on the shell, suitable for installing many same connectors with the same board; ?the cabe covers include three types: encapsulation, short clip plate and long clip plate cable covers; ?the plug and receptacle with metal shield and the receptacle with seal rubber washer; ?two types of receptacle: commontype, airproof type. ?the performance standard: Q/Ln J6-136-2001 The specification of Y30 circular electrical connectors ANOVAY is a professional manufacturer and exporter in electronic component: connectors and relays. We specialize in connectors of all types, including circular connector, rectangle connector, RF coaxial connector, desquamate connector, DIN41612, and other connectors. We specialize in relays of all types, including Electromagnetic Relays, RF coaxial relays, Magnetism keep relays, Temperature Relays, Time relays, Miniature power relays, Automobile power relays, Communication relays and Special Relays. Offering more than 10,000 combinations of products and is ever increasing in choices available through customer specification and product design re-engineering. ANOVAY's high quality connectors and relays are found in a variety of challenging applications and environments including: aviation, space, weapon, ship, electronics, instrument, computer, medical, industrial control, test and measurement, audio-video, household appliances, locomotive, nuclear energy, petroleum, communications and information technology. By the way, we are finding the agents for our products overseas.