A chemical water that serves the society. The water component of the channel is a sodium hydroxide commonly known as Gothic. It has no odor, is sturdy but corrosive. It usually produces high heat when it meets water, dissolves the accumulated oil in the canal or other Sludge. Generally used to dredge pipes, toilets, blocked passages, etc.家居通渠工程, 專業通渠, 廁所通渠方法, 廚房通渠方法, 清除排水管堵塞, 簡易通渠法, 通渠, 通渠佬, 通渠價錢, 通渠公司, […]