The invention relates to a patent certificate for a shell having a square hole, a round hole and a s

A patent certificate for an internal tooth extraction mechanism for an internal tooth mold

A patent certificate for a shell mold gate cutting device

A patent certificate for a box ejector mould with a barb and a side hole

The invention relates to a patent certificate of light display aviation aluminum decorative parts

A patent certificate for a honeycomb decorative surface substrate

The invention relates to a patent certificate of textile leather decorative surface substrate

The invention relates to a patent certificate of textile fabric decorative surface substrate