Daido Sangyo Co., Ltd. is a Tokyo-based manufacturer specializing in high-quality laboratory tools designed to support histology, immunostaining, and general lab operations. With a reputation for precision and practicality, Daido Sangyo offers a range of trusted products including the A‑PAP Pen for drawing hydrophobic barriers on slides, the Tissue Capture Pen for controlled cell adhesion, the Tube Checker Pen for solvent-resistant labeling, and Mount-Quick media for slide preservation. These tools are widely used by researchers around the world to enhance accuracy, efficiency, and reproducibility in laboratory workflows.