In addition, our company has developed and produced helical flowmeters, steam flowmeters roots flowmeters, ultrasonic flowmeters, rotatary piston flowmeter, alloy scraping plate flowmeter, gas and liquid turbine flowmeters, electro-magnetic flowmeters, strainers, high viscosity pump and microprocessor based flow computers, indicators and totalizers for flowmeters, air feeding burbles and so on, which are sold in the fields of petroleum, chemical, metallurgical, power, foodstuff and martial industries and scientific research departments in home and abroad.