KOS is a professional designer&manufacturer of piping valve.

KOS accept OEM business.

KOS'S products : the bellows seal globe valve, globe valve, gate valve, strainer, check valve, ball valve etc.

KOS'S products applied to hot water, steam, vacuum facilities,power station, the system of ship, chemical,recycling facitilies etc.

KOS have professional technical engineer to help users to select,design&manufactue the proper valve product.

KOS has their perfect products quality assurance system,

KOS provide high-quality after-sales service.

KOS know constant innovation is the source of advancement.

KOS'S pursuits is your satisfaction.

Honour from you&me.