Celebration activities. Yuhong Waterproof and Ten Thousand Stores Flying Rainbow is the celebration event held by Oriental Yuhong Civil Engineering Branch of "Eight Stores Celebrate Together, Ten Thousand Stores Flying Rainbow". Yuhong Waterproofing is a trademark of Beijing Oriental Yuhong Waterproof Technology Co., Ltd. Yuhong Waterproof is the flagship brand of Oriental Yuhong Waterproof Technology Co., Ltd.