Founded in 2005, Qingdao DaZeFengYang is one professional pressure gauge and hardware tools manufacture, who is also one member of China National Hardware Association. Together with our highly skilled technical experts, we have put an effort to meet the quality of pressure gauge as per GB/T (Chinese Standard) & International Standards requirements, and have already got ISO9001, CE certificate for all our Products, including: standard/commercial pressure gauge, stainless steel pressure ...