Ax .mih la thah vien moi . moi tap choi ca 7 mau gan 1 tuan thui . minh co tim hieu tren wep rui thay hay hay. co nhieu loai 7 mau duoi to va nhieu kieu khac nhau . ko biet may loai do minh nuoi lau voi ep thi dc ha ban . hay phai mua may loai do ve de ep vay . hihi . cam on da doc