[求助] 模具设计中的要求是英语的，看不懂，请求帮忙

MATERIAL：high tear strength silicone,40 durometer shore
                      1000LBtensile strength per astm D300
surface finish:exterior:mold tech
the finished assembly shall be free of flow marks.free of flash at all perimeters,&trimmed flush at all gates.
哪位，好心人，帮帮忙啊。