Mega electronics quick laser label system mega electronics white a4 q l50 the white a4 quick laser labels from mega electronics are new laser printable self adhesive polyester sheets supplied in a4 size for the easy production of labels control panels warning labels and signsthese high quality labels have been manufactured using only the finest materials including the a4 polyester sheets that are coated in a high performance modified acrylic adhesive for added protection the printed s