卫生纸 (wèishēng zhǐ) is a more common way of saying "toilet paper" in Chinese.
Check out these groups of Chinese phrases too. You might find more useful Mandarin phrases. The current Chinese phrase "Toilet paper (synonym)" appears in these as well
Learn how to say the Chinese phrase for Toilet paper (synonym) with standard Mandarin pronunciation. Free Mandarin phrases with pinyin and literal translation