Pay balance amount for customized products

Customized products include:
1) 1000pcs receivers
(The receiver's features: the receiver has only one mode of operation “Latching Mode” when it is used with a remote control with buttons A and B. Press button A to turn the receiver on and button B to turn the receiver off.
(When the receiver is turned on, the timer starts and after 30 minutes the receiver is turned off.)

2) 100pcs Remote Control Duplicator

Customer has paid a deposit of $600.
Still need to pay $1850 which includes $300 DHL shipping fee.

This link is for payment of $1850.