Product Code: LMPBLA A Black China Marker, also known as a grease pencil or chinagraph pencil, is a versatile wax-based marking pencil designed to write on virtually any porous or non-porous surface. Unlike conventional pencils, the marker features a paper-wrapped wax core with a pull string that allows the wrapper to be peeled away as the tip wears down—eliminating the need for sharpening. The wax formulation produces bold, opaque, moisture-resistant marks that can be easily removed from smooth, non-porous surfaces with a damp cloth or suitable cleaner. Black China Markers are widely used in laboratories, aquaculture, fisheries, manufacturing, construction, photography, and shipping for temporary or semi-permanent marking. Writes on wet, dry, smooth, rough, porous, and non-porous surfaces. Peel-off paper wrapper eliminates sharpening. Bold black marks are easy to read. Wax formula resists moisture and smudging. Can be erased from glass, plastic, and other smooth surfaces. Works reliably in hot, cold, and humid environments. Non-toxic formulations are available from most major manufacturers.