Dai Thai An Co., Ltd specializes in manufacturing all kinds of gaskets/Ron to fill door gaps from the main door, window, bedroom door, bathroom door and other openings, etc.. Our gaskets/Ron are water resistant, heat resistant and especially are saturated with active insect repellent which has over 2-year effect.Dai Thai An Co., Ltd specializes in manufacturing all kinds of gaskets/Ron to fill door gaps from the main door, window, bedroom door, bathroom door and other openings, etc.. Our gaskets/Ron are water resistant, heat resistant and especially are saturated with active insect repellent which has over 2-year effect.