1、Will it do harm to human body during use?Product internal only: calcium chloride particles and aromatic particles, will not harm the human body 2.Are you manufacturer? Yes, we are professional manufacturer in this area for 9 years. 3.Can I have sample for try? Yes, free samples available. 4.Can I have my own logo? Yes, customize welcome here. 5.What's your CRD? Base on quantity (usually 25-30days) after artwork received. 6.What is your monthly production capacity? 1000000pcs per month.