waterproof dry bag-5l dry bag is a good example of efficient production of Dongguan Prosperity Sports Goods CO. Ltd. We select superior raw materials in a short time which only come from qualified and certified suppliers. Meanwhile, we strictly and quickly conduct testing in every phase without compromising the quality, ensuring that the product will meet the exact requirements.. In recent years, Prosperity has gradually received a good reputation in the international market. This benefits from our continuous efforts on brand awareness. We have sponsored or participated in some of China local events to expand our brand visibility. And we post regularly on social media platform to effectively execute on our brand strategy of the global market.. We have created an easily accessible way for customers to give feedback through Prosperity Outdoor Sport Goods. We have our service team standing by for 24 hours, creating a channel for customers to give feedback and making it easier for us to learn what needs improvement. We make sure our customer service team is skilled and engaged to provide the best services..