HS code: 7017200000

Of other glass having a linear coefficient of expansion not exceeding 5×1﹣6 per Kelvin within a temperature range of ℃ to 3℃

其他玻璃制实验室等用玻璃器(0-300℃时线膨胀系数≤5×10-6／开尔文的玻璃制);