31316771cellulosePT2026-03-30 20:25:18BT31303912cellulose and cellulose by productPTNT31340195alkali cellulosePTNT31340198methyl cellulosePTNT31316734lignocellulosePTNT31340200microcrystalline cellulosePTRT31409925hydroxyethyl cellulosePT