When placing order , please clearly indicate product model , precision grade , measurement range , maximum static pressure , material quality , connecting method and whether valve assembly is involved 訂貨時(shí)須注明產(chǎn)品的型號(hào)、精度等級(jí)、測(cè)量范圍、最大靜壓、材質(zhì)、連接方式及是否裝配閥組。