disposable bamboo steamer liners non-stick steam-resistant paper household steamed buns packing paper food grade bottom paper hot steamed packing paper

square bottom paper-6 * 6cm square bottom paper-7 * 7cm square bottom paper-8 * 8cm square bottom paper-9 * 9cm square bottom paper-10 * 10cm square bottom paper-12 * 12cm square bottom paper-13 * 13cm round bottom paper-6cm round bottom paper-7cm round bottom paper-8cm round bottom paper-9cm round bottom paper-10cm round bottom paper-11cm round bottom paper-12cm

500 sheets