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Tianjin Sun Investment Group Co. Ltd. has developed 22 national patents, and manufactures ten series, hundreds of varieties of metering products.
PRODUCT LINE：
 PREPAYMENT WATER METER
Water meter (for single user)
Heavy-duty water meter
PREPAYMENT WATT-HOUR METER
Single phase
Three phase
Three phase (public)
Electronic Watt-hour meter (Static)
PREPAYMENT GAS METER
(PREPAYMENT) HEAT METER
Heat meter
Prepayment heat meter
Calibration equipment
VENDING MANAGEMENT SYSTEM
COMMUNICATION METERS
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