本文件规定了用于木塑回收复合材料（以下简称WPRC）的原材料的类型和比例。它还规定了WPRC的健康和安全要求，以及测试这些性能的方法。 本文件适用于主要用作建筑材料的WPRC。

This document specifies the types and proportions of raw materials to be used for wood-plastic recycled composites (hereafter referred to as WPRC). It also specifies the health and safety requirements for WPRC and the methods to test these properties. This document is applicable to WPRC which are primarily used as building materials.