Yellow phlegm is normally a sign of an infection, or a case of the common cold. Greenish or brownish phlegm is nearly always a sign of infection. Greenish or rusty phlegm or phlegm with rusty spots can also be a sign of pneumonia. Coughing up brown phlegm is also a common symptom of excessive smoking.
A flowboard is a variation on a skateboard, combining aspects of surfing, skating and snowboarding.
Particleboard is the standard or basic product, the practice has developed that the special products (MR and. Flooring) are the ones specifically identified by name printed on the sheet or by colour code. The binder system used for Standard Particleboard is urea formaldehyde. Paraffin wax is added to the surface.