双面灰白纸板 patent-coated newsback

灰底白板纸 Manila board ; white Manila board ; grey board ; CCNB

灰底白版纸 grey manila board

单面涂布灰底白纸板 Duplex Board

灰底白纸板 grey board

灰底涂布白板纸 duplex grey board

白底灰芯纸板 CCWB