1. He rereke nga ahuatanga Hydroxypropyl methylcellulose: he ma, he ma, he ma, he kirikiri, he paura kowhatu ranei, no etahi momo momo etero i konatunatua te cellulose kore-katoto. He waerau hangarua, hohekore, viscoelastic. Hydroxyethyl cellulose: (HEC) he ma, he kowhai marama ranei, he hongi, he kiko paitini kore...
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