3. WH type drill is used for many plate process, such as paper phenolic plate, epoxy resin plate , Halogen-free plate, MCPCB, Ceramic plate etc. WH型钻头可应用于多种板材加工,例如纸基板、环氧树脂板、无卤素板、铝基板、陶瓷板等板材。
4. Photographic light-sensitive paper coated with silver bromide, used in photographic reproduction or photo typesetting, producing a positive image. 用溴化银涂面的光敏性相纸。复制照相或照相排字等阳图制作用。
5. Photographic light-sensitive paper coated with silver bromide, used in photographic reproduction or photo typesetting, producing a positive image. 用溴化银涂面的光敏性相纸。复制照相或照相排字等阳图制作用。