When sourcing Yellow Paraffin Wax, the most critical technical parameter is the Melting Point, typically ranging from 54°C to 64°C. You must also verify the Oil Content; high-quality fully refined wax should have an oil content below 0.5%, while semi-refined wax may go up to 1.5%. Additionally, check the Color Scale (Saybolt) to ensure it meets your specific aesthetic requirements, and confirm the Needle Penetration (25°C) to assess the hardness and flexibility of the wax for your specific application.