Fix the centring glass ball now into the precision holder.
把定心玻璃球装到精密固定器上。
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。
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。
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