32 赵勇,王圣豪,一种具备自动检测胶球数量的胶球装球室,专利号:201810447637.3

Release Time:2021-09-10| Hits:

Title:32 赵勇,王圣豪,一种具备自动检测胶球数量的胶球装球室,专利号:201810447637.3

Service Invention or Not:No