bluestar (beijing) has developed a unit to test windshield-cleaning agents that meets national standards. the standard test involves setting the windshield wipers so that they wipe 20 times a minute and use 30 ml of cleaning agent every 10 swipes. but, until now, there has been no equipment of this kind on the market. so, bluestar and equipment processing plant personnel discussed the matter and found the necessary approach and, after more than two months of hard work, managed to come up with the right equipment to ensure windshield-cleaning product quality.