the Hangzhou gang is normal. According to the relevant information, Bangbang Best Chain Group is a registered trademark of Zhejiang Bangbang Environmental Technology Group Co., Ltd., headquartered in Hangzhou, Zhejiang Province, and is one of the top three chain enterprises in the domestic pest control industry. Bangbang Best is a domestic pest control service brand, which mainly serves pest risk management, aromatherapy system construction, decoration pollution detection and treatment, fumigation and insect killing, pest killing agents, insect killers and incense for insect repellent.