Buyers should prioritize the pulp source, as it determines the softness and strength. 100% Virgin Wood Pulp is the premium standard for facial tissues, while Bamboo Pulp is a high-demand eco-friendly alternative. For cost-sensitive industrial use, Recycled Pulp is common. Additionally, check the GSM (Grams per Square Meter); a standard high-quality tissue is usually 13-15 GSM per ply. Ensure the product is OBA-free (Optical Brightening Agents) to guarantee it is safe for skin contact and non-fluorescent.