Look: differentiate the material, the hoses in the market mainly have the stainless steel and the gold wire. Stainless steel with good corrosion resistance, not easy to oxidize; The surface friction of 304 stainless steel hose is not black. If there is black on the palm of the hand, it is the wire. The simplest way to identify the material is to absorb it with a magnet. The real stainless steel wire is not sucked.
Smell: smell the pungent smell from the mouth of the hose with the nose. EPDM (EPDM) is commonly used in the country. The higher the rubber content in the tube, the stronger the bayonet and the stronger the tensile blasting. Domestic tubes are generally not treated with oxides, and the taste is mild, while the imported tubes are treated with oxides and the taste is heavier.
Ask: the hose and the faucet, the producing area and the manufacturer also have high-grade and low-end cent, the high-grade hose enterprise is concentrated in the water port, jade ring and so on.
Cut: before smelling the inside tube, have the taste, the consumer can also peel off the inner tube, if the inner tube is very crisp, very easy pull to break, very likely sulfide not good, do not suggest to buy.