For domestic market: 1. Arrangement client's staff team to our factory for learning and studying during pre-assembly formwork, there are 2 chances to learn how to assemble and dismantle formwork. 2. Guidance for 3 levels of typical floors at worksite. 3. Design and match panels for client again when re-purchase our Al-formwork. For aboard market: 1. Customer arrange your construction team to our factory for learn and study how assemble and dismantle al-formwork, total twice times. 2. RD offer teaching videos for clients. 3. Answer the question at worksite by phone to communicate immediately and then solute the problems by the instant messaging later.