The normal frozen shrimp head may be flat or not bulging, but the shrimp head injected with glue is very bulging, that is, it swells badly. Most of these shrimps are injected with glue.

Shrimp will be flat or not so round when frozen, and the body of shrimp injected with glue will swell quite, just like being pregnant, and the feeling of bursting is injected with glue.

Normal frozen shrimp will feel sinking after being pressed, and will not swell for the time being, but after being pressed by glue, the shrimp will rebound obviously, with short rebound time and obvious rebound.

Usually, shrimp meat will not be so transparent after peeling, because it has the texture of meat, but shrimp meat injected with glue will have a considerable sense of transparency, mostly because glue plays a transparent role.