1. Disposable PP is usually used for producing plastic kettles that have no smell. If reclaiming PP material is used instead, there will be a big smell when you open the kettle before first usage.

2. 202# or 304# stainless steel is usually used for producing stainless steel kettles that are more healthy and uneasy to get rusty compared with 201# stainless steel. 304# stainless steel is usually used for high-class kettle.201# or even 403# is usually used for low-class kettle that is easy to get rusty and goes broken.