Ua tsaug rau cov neeg Amelikas tau siv tswv yim tawm tswv yim tom qab tsim kho ntawm 901 yam khoom rau 4 lub hlis!
Si-901 yog kisho cov khoom zoo tshaj, mas yog raws li polysiloxanes, nrog qhov zoo tshaj plaws ci ci, hydrophobicity thiab durability, Nws yog ib tus qhua nyiam.