Most furniture can be refinished, but there's some type that should not be, or they require extra special care. Synthetic materials such as PE rattan wicker used in the BRS series must not be refinished at all, as it is designed with integrated color and protection. Refinishing these materials exposes degradation of their protective properties and may affect weather resistance.
In general, for outdoor furniture, avoid refinishing pieces with powder-coated finishes, as they are designed and engineered to last, ensuring the best protection against corrosion and wear. Instead, refinish your furniture by adequately cleaning it. If your furniture looks pretty worn out, consider replacing it instead of refinishing it. Modern outdoor furniture in the vein of the BRS series is built for durability with materials that maintain their appearance well without requiring a refinish.