Dahe is the China patent holder of Ball Joint Handrailing and the drafting company of the Chinese Industry Standard.

大和是球接栏杆中国专利持有人，是中国行业标准的起草人。

youdao

Dahe is the China patent holder of Ball Joint Handrailing and the drafting company of the Chinese Industry Standard.

大和是球接栏杆中国专利持有人，是中国行业标准的起草人。

youdao