按原料成本计算的依据
基于1个网页-相关网页
On the basis of the material technology in China, the mineral nutrition drinking water filter device has low cost, and effectively prevents the secondary pollution and is safer and more reliable;
本实用新型利用现在国内较为成熟的技术为基础，成本低廉，并有效防止 了二次污染，更加安全可靠；
youdao
应用推荐
模块上移
模块下移
不移动