To avoid customs seizures, the factory must comply with ISPM 15 (International Standards for Phytosanitary Measures), which requires Heat Treatment (HT) or Methyl Bromide (MB) fumigation for solid wood packaging, evidenced by a recognized stamp. Additionally, for the US market, ensure CARB Phase 2 or EPA TSCA Title VI compliance for composite woods (MDF/Plywood) regarding formaldehyde emissions. For eco-conscious brands, look for FSC (Forest Stewardship Council) certification to guarantee sustainable sourcing.