Yes,sure. We are a manufacturer based in Ningbo. You are welcome to require for 3D view link of our factory.

Please first test and advice us more descriptions of the problem,it would also be better for you to take pictures or videos for us to evaluate remotely and analyze the reasons.

It depends on work cycle, battery chemistry, and charging cycles. Generally, they last at least a year and a half to two years.

When you find the product you need, please send an email to us,we will have sales to contact with you for more details.

Paypal,Western Union,Credit Card,TT and Ali-Assurance and so on.

A:We strive our best to provide you the most reliable, affordable way of shipping service. But sometimes international delivery is highly depended on the Courier Company and local customs/duties.
But due to the pandemic,delivery time will have a bit delay.  If you do not receive your item on time, please contact us immediately for further assistance. Thank you for your understanding.
Gernerally,production time:5~15 days for samples, 15~30 days for bulk order,depends on the quantity of your order. We also do forecast for long-term business relationship partners.

In general, it is 100 Pcs. According situational, it is negotiable. You can also place sample order.

Samples will be charged firstly,but will be refund to you in any terms when you confirm the bulk order.

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