Reputable contractors use a large concrete sander/grinder to do this or you will hear cracking noise when you walk on your wood floor. It is required for a "perfect" job. You can rent one from your local rental stores.
【在 t**e 的大作中提到】 : Reputable contractors use a large concrete sander/grinder to do this or you : will hear cracking noise when you walk on your wood floor. It is required : for a "perfect" job. You can rent one from your local rental stores.