When sourcing children's apparel, safety is the absolute priority. You must ensure products comply with CPSIA (Consumer Product Safety Improvement Act) for the US market or EN 14682 for the EU, specifically regarding drawstrings and small parts that pose choking hazards. Verify that the fabrics are OEKO-TEX Standard 100 certified to guarantee they are free from harmful chemicals like lead, phthalates, and formaldehyde. For stock sets, always request a Physical Safety Test Report covering button attachment strength and seam security.