1: See if there is a tag authorized by the bamboo charcoal fiber manufacturer on the bamboo charcoal products.
Generally, regular bamboo charcoal fiber manufacturers have patent tags for clothing manufacturers to use. The label is the brand of bamboo charcoal fiber, not the brand of clothes. This tag can be used as the birth certificate of bamboo charcoal fiber.
2. See if bamboo charcoal cloth will pilling, bamboo charcoal cloth will not pilling.
If possible, you can use fire. When burning, it burns slowly, the smoke is white, and the burnt ashes will not melt together like a piece of paper.