Guangdong WELLCAMP BUILDING MATERIALS CO., LTD strictly selects the raw materials of modular prefabricated house suppliers-expandable container house. We constantly check and screen all incoming raw materials by implementing an Incoming Quality Control - IQC. We take varies measurements to check against collected data. Once failed, we will send the defective or substandard raw materials back to suppliers.. We receive important feedback on how our existing customers' experience WELLCAMP, WELLCAMP prefab house, WELLCAMP container house brand by conducting customer surveys through regular evaluation. The survey aims to give us information on how customers value the performance of our brand. The survey is distributed biannually, and the result is compared with earlier results to identify positive or negative trends of the brand.. To ensure that we meet the production goals of customers, our highly skilled service-oriented professionals will be available to help learn the details of products provided at WELLCAMP Prefab-House. In addition to that, our dedicated service team will be sent for on-site technical support..