目前中国第一家也是唯一一家硫酸铁通过NSF认证的公司。

At present, China's first and only one ferric through NSF certified company.

youdao

目前中国第一家也是唯一一家硫酸铁通过NSF认证的公司。

At present, China's first and only one ferric through NSF certified company.

youdao