... , blue4, size:20mm to 32mm5, sanitary,healthy,non-toxic,rustproof and no scale6, recyclable,benefit to the environment7, good resistance to ... shock and impact8, resistance to all kinds of chemical liquid9, high ... years of service life under normal conditions, 20 degreeProducts specifications and details :1, Spec:D20,D25,D322, ISO9001:2000 ...