1.酒店布草上的黄斑分为：血渍、尿渍、水果渍、小食品、酒水渍、化妆品渍、笔油。
The yellow spots on hotel linens are divided into: blood stains, urine stains, fruit stains, snacks, alcohol stains, cosmetics stains, and pen oil stains.
２.医疗被服上出现的黄斑。大部分是治疗后产生的排泄物、药渍、碘伏类消毒渍、免洗手消毒剂。
２. Macular spots appearing on medical clothing. Most of them are excrement, drug stains, iodine disinfectant stains, and hand sanitizers produced after treatment.
我们都非常清楚大部分污渍是如何附着在布草表面的。但是往往我们忽略，在工作中没有正确认识到由于不当操作造成的污垢，去除是非常难，人们又不知道是如何来的。经常有很多洗涤行业工作十几年，都还有没有整明白为什么污渍还会这些地方表现出。其实不是不明白，只是不愿意承认和自己有关系。永远是一种说法，我们不多装洗不完，不多装下不了班了。大家都知道洗衣机进水水位是固定的，投水是尽可能把洗下来的污染物溶解到水中排出，如果没有排掉会是水出来了，我们洗下来脏东西的高脱后部分附着在布草表面，经过烫平机高温熨烫才出现。往往这种污垢的表现形式，是床单被罩枕袋上的黄斑，很难去除。
We are all very clear about how most stains adhere to the surface of cloth. But often we overlook the fact that in our work, we do not have a correct understanding of the dirt caused by improper operation, which is very difficult to remove, and people do not know how it came about. Many people in the laundry industry have been working for over a decade without fully understanding why stains still appear in these areas. It's not that I don't understand, I just don't want to admit that it's related to me. It's always a saying that we can't finish washing without too much packing, and we can't finish work without too much packing. As we all know, the water level of a washing machine is fixed. When adding water, we try to dissolve the pollutants that have been washed into the water as much as possible and discharge them. If they are not discharged, the water will come out. After washing the dirty things, some of them will adhere to the surface of the cloth and only appear after being ironed at high temperature by a ironing machine. Often, the manifestation of this dirt is the yellow spots on the sheets, covers, pillows, and bags, which are difficult to remove.