The promotion meeting of Shanghai Construction Technology Promotion Center and Shanghai HVAC Technology Exchange Network jointly held by Shanghai Construction Products Recommended Standard and Balance Valve Application Technical Regulations was held recently. EMMA Trading (Shanghai) Co., Ltd. developed and manufactured TA balance valve products, used in central air conditioning water system, with high precision, excellent performance, variety, the whole family features. At present, the product has been used in Shanghai Grand Theater, Ka Wah Center, World Trade Plaza, Walden Building and other construction projects.