The mark consists of in the logo I have the colors red, blue , yellow and black , it has a manifold gauge dials with the left manifold dial and hose being blue and the right manifold dial and hose being red wrapping around to make a square , also with a yellow hose in the middle ,above the manifold gauge it states soflo (in red) tech ( in blue). Below the manifold guage it states air conditioning and heating in black.