This is a Bond Plus design that strives to achieve a safe and clean school, road, and residential environment. Grading safety cover 'Cityguard' prevents falling leaves, cigarette butts and disposable waste from entering the sewers and prevents the risk of accidents caused by falling wheels of bicycles, kickboards, strollers and inline skates on steel grating. Bonplus Design Co., Ltd. has increased space utilization by optimizing space and simplifying design. We improved the completeness of the product with a simple design that fits various spaces. High-quality reliable material for high-quality, heavy ABS material and non-toxic silicon