On the last day of sprint, TI, together with all colleagues, is still sticking to their posts and looking forward to your joining.

Of course, my friend.  We can help put your logo on the flightcases of goods for free, only for you.
As for product, Yes, sure, we accept OEM. If you need to customize your own logo, our minimum order quantity is ~pcs, and the cost is also different. Are you the person in charge of this project? You may want to discuss it with your team. Check it out and update our quotation after confirmation.

1. First of all, express a sincere apology to the customer and appease the customer's current mood.
I can understand that you are feeling the same as I was before, but good things have to wait. Inform them that this is our best-selling product, and the factory production volume is very high. Big workers work overtime at 12 o'clock every day. 

2. Ask the factory about the latest production status and when it is expected to be completed. 

3. Tell customers that we are very strict about product quality and will do tests before leaving the factory. You can get it in the future as the best product, then send some factory video pictures appropriately. 

I'm sorry; this is the company's regulation. 
There are many people working here, so we must strictly follow the company's regulations; otherwise, it will be very messy and quite difficult for the financial department. 
Please understand that we cannot help you with the payment request, but I can give you preferential treatment and a guarantee on the quality and price of the goods.

Sure, here is the catalog you need. Please check.

Yes,we can. Just find the right sound system and send me your exact address, including your postal code, so we can check the freight for you and help us offer door-to-door delivery.