เสาเข็มเจาะ : เกรด A เป็นกันเอง
????? ???????????/???????????/??????? ??? ????????
?????????????? ???????????/???????????/??????? ????????? ????????
??? ???????????
??????????/?????????/?????????????? ???????????/???????????/??????? ????????????/???????????????/?????
??????????????| ???????????/???????????/??????? ??? ???/?