Did you receive a price increasing email from your supplier? If no, then maybe it's just on the way :-) Following is the photo shows that copper cost increased 40% from Nov. 2020 to March 2021. 

So for any purchasing plan, please kindly arrange it in advance to help you save cost, NEWSTAR LED produce LEDs by ourselves and kept enough PCB materials in stock, so currently no influence on us. But if the raw materials cost is going higher again, we'll have to adjust the price accordingly. 

Thank you for all of our customer's support in 2020, even it's difficult time, we are growing up together.