JB / T8691-1998 wafer type knife gate valve JB / T8692-1998 flue butterfly JB / T8937-2010 Wafer Check Valve JB / T9093-1999 steam traps technical conditions JB / T9094-1999 LPG equipment emergency shut-off valves for valve type should normally shows valve type, drive, connection type, structural features, sealing surface material, body material and nominal pressure and other factors. Standardized valve type of valve design, use, sell more convenient. Valve type and material of today, more and more Taiwan Toyama Valve Co., Ltd., model designation of the valve is also increasingly complex. Although China unified standard valve model designation, but increasingly unable to meet the development needs of industrial valves. Who can not use new valve standard numbers, each manufacturer may need to develop their own models. Taiwan Toyama Valve Co., Ltd., the Hong Kong _ valve (Online) _ Guangzhou valve by valve, the Hong Kong Science and Technology Co., Ltd. of Dongguan. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) is Dongguan, butterfly leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Ming Kong valve leadership with the staff warmly welcome all inquiries negotiations to create a better valve out of Hong Kong in the future.