I. Properties：

CBW Retaining wall drainage box (RWDB), is an improved version

of traditional drainage box. This RWDB has larger dimension  with

larger drainage holes so that it will not easily block by thick

particles, and therefore has superior  drainage function in

comparison  to traditional ones. In addition, the RWDB can tightly

fixed to the retaining wall during construction backfilling process,

this overcome the problems of lost or loosed drainage box that

usually occurs when using the traditional ones.

II. Application：

• ABS and PP injection molding,  high resistance to stress
• Superior drainage function. Will not be blocked by larger particles
• Fixed to the retaining wall tightly during installation
• Easy to install and cost effective