The gross roots should be
smoothã€dry and the percentage of moisture less than or equal
*0%ã€PH value less than *0, and before construction dust, oil,
debris, hollowing and other loose objects floating Should be
cleared.
Use the HELIJIA special seal
undercoat for one time before brushing.
The temperature should be higher
than 5 centigrade; the rainy day should not
start construction and general brushing 2 or 3 times.
The best protect time is
7days（*5centigrade）after painting.
