Couch is one of the most important furniture that every building needs to have. It can be your house or even your office. It is important to choose the comfortable and also durable couch for your office since, there are a lot of people are working there with different needs and in different situations that can endanger the couch. The code can be W, S or X. W code means that you can use water to clean it, S code means water-free solvent, while X code means that you should not use neither water or water-free solvent. It means that you can only vacuum it. However, for code W and S, you still can vacuum it before doing the treatment. Furniture & Furnishing.