Shanghai Dayu valve produce co.,ltd (called Dayu for short) is a Sino-US joint venture which was set up in 1981 located at 1280 Panjing Road, baoshan District. Dayu has a land area of over 14,000 square meters with more than 280 staff members 15% of which are senior engineer and technicians. Dayu has many kinds of advanced equipments,over 65 sets of various processing and testing equipments,such as....