Orthodontic And Restorative Dental Treatment Articles & Analysis
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Bromelain is closely related to pineapple. Chemist Vicente Marcano first discovered bromelain in pineapple in 1891, and then another chemist, Russell Henry Chittenden, extracted bromelain from pineapple fruit, which was then called "proteolytic enzyme in pineapple juice". Scientists have found that ripe pineapple stems have higher levels of bromelain. Many tropical fruits, such as papaya, mango, ...
Material Description: Acrylic plastic is commonly known as plexiglass, resistant to outdoor aging. It has excellent light transmission and good surface finish, and can print transparent and translucent products with certain strength requirements. The disadvantage is that the surface hardness is slightly lower and it is easy to scratch. Application: pmma injection molding is widely used in ...