The logo concept comes from ancient arrow shield, representing the high end qualities of "Durable" friction system, always in pursuit of higher targets and at the same time stays strongly operational. The brand is meant to be always "more precise", "more accurate" and "more stable", invincible and protecting like an ancient warrior. The logo wants to emit strong visional impact. Green is the background color, meaning friendliness and life. D is the shape of arrow shield, structurally strong and suitable, naturally signifying the quality and prospect of the "Durable" brand.