https://patents.google.com/patent/CN207430538U/en
CN207430538U - A kind of cellulose acetate centrifuge material leakage protective device - Google...
The utility model discloses a material leakage protection device for a centrifuge used for cellulose acetate, which comprises a main body and a motor. The left...
leakage protective devicekind ofcellulose acetate
https://patents.google.com/patent/CN204012652U/en
CN204012652U - A kind of earth leakage protective device based on relay - Google Patents
The application openly provides a kind of earth leakage protective device based on relay, comprising: by the instrument transformer of power line, be...
leakage protective device