6.f The round hole has been asked to the manufacturer (foreign manufacturer), it is recommended that the hole should not be closed, and it can be dealt with according to the owner's instructions
6.f The round hole has asked the manufacturer (foreign manufacturer), it is recommended that the hole should not be closed, can be handled according to the instructions of the owner
6. F the manufacturer (foreign manufacturer) has been inquired about the round hole. It is suggested that the hole should not be closed and can be handled according to the owner's instructions<br>