... at a low flow rate of 4 L/h Mechanical parts use of high-quality material to ensure a stable ... Actual Units Produced(Previous Year) Water Meter, Water Meter Parts Water Meter 1,800,000 Sets Per Year Water ... Meter Parts 3,600,000 Sets Per Year Water Meter 1 ... ,200,000 Sets, Water Meter Parts 2,500,000 Sets Export Market Distribution: Market Revenue ...