Tri-metal plate Offset plate for very ling run work where three layers of metal are used in manufacturing the plate.

三层金属版用在层不同金属造成，能作极大印量的柯式印版。

youdao

Tri-metal plate Offset plate for very ling run work where three layers of metal are used in manufacturing the plate.

三层金属版用在层不同金属造成，能作极大印量的柯式印版。

youdao