chinese marks with red triangle next to the marking

by michael
(england)

i have a charger or plate with oriental markings in a red box and at the side of the box there is a red triangle can you please tell me what this mark is..
the plate as a picture of a vase in the centre with flowers in the vase and has butteryfly decoration around the inner of the charger going around the plate...the plate looks to be hand painted.
any info on this would be great please as i cant find it on google this markings or anywhere else.
i have tried for about 2 months now.