... /PP, 55% croude wood and bamboo powder, 10% special additives, such as antioxidant, lubricant, colorant, ultraviolet adsorbent etc.2 ... Looks and feels like natural wood·Durable,anti-impact ,wearproof ,with high density·High capacity of UV-resistance,and color stability· ... :2008 Certificiate ISO 14001:2004 CertificateSGS Certificate: 2012 High tensile strength and Corrosion-resistant wpc flower box