For a copyright notice you can add the following to the source files and documentation:

********************************************
/* Copyright @ ShengWang, all rights reserved.
/* This product and all associated components, source code, APIs, services, and documentation (the “Materials”) are owned by Shanghai ShengWang Technologies Co., Ltd., its affiliates (“ShengWang”) and its licensors. The Materials may not be accessed, used, modified, distributed or otherwise deployed for any purpose without a license from ShengWang.
/* Use without a license or in violation of any license terms and conditions (including use for any purpose competitive to ShengWang’s business) is strictly prohibited.  For more information, please contact legal@shengwang.cn
*********************************************