WPC, as a new type of environment-friendly composite material with advantages of wood and plastic, has attracted great attention of both wood industry and plastic processing industry. Products are widely applicated in construction, furniture, decoration, transportation and automotive fields, and wood fiber materials are widely sourced, renewable, low-cost, and has less wear on processing equipment. With people's increasing awareness of environmental protection, wood plastic composite materials market is developing rapidly. The SILIMER 5321 wood plastic lubricants, a structure that combines special groups with polysiloxane, improves the performance of wood-plastic composites while reducing production costs.