Annular flow meter, better than sika annubar flow meter. Now, the market of annular flow meter is very hot. There exists about 80 factories located in the suburb of dongtai city in zhejiang province, the cluster of this industry. But the market there is also filled with chaos. Many companies live on purchasing components to reassemble; some company may think it too troublesome and the work as briefcase company to declare that they are manufactures of annular flow meter. This situation is worrying. The so-called manufactures do not have their own calibrator at all, leave alone the accuracy of annular flow meter.
