B2B buyers should ensure products meet ISO 14644-1 standards for cleanroom classes (e.g., Class 100/ISO 5 vs. Class 10/ISO 4). Key technical metrics include Adhesive Strength (Peel Adhesion), which should be high enough to capture dust but low enough to allow easy foot movement. For safety, ensure the mats have a Non-slip backing or a low-profile frame to prevent tripping hazards. Additionally, check for RoHS and REACH compliance to ensure the adhesive materials do not contain hazardous substances that could outgas and contaminate the controlled environment.