We conduct business with the following related parties: Keylink International (B.V.I.) Inc. and its subsidiaries and affiliates (“Keylink”), Nuvoton Technology Corporation (“Nuvoton”) and Jiyuan Crystal Photoelectric Frequency Technology Ltd. (“JCP”).

Keylink is a 5% joint venture partner in our Shanghai assembly and test facilities. We sell products to, and purchase inventory from, companies owned by Keylink. In addition, our subsidiaries in China lease their manufacturing facilities in Shanghai from, and subcontract a portion of our manufacturing process (metal plating and environmental services) to Keylink. We also pay a consulting fee to Keylink.

We purchase wafers from Nuvoton for use in our production process and we have an agreement to purchase approximately $29.1 million of wafers from Nuvoton that ends in the fourth quarter of 2025. We consider our relationships Nuvoton to be mutually beneficial and plan to continue our strategic alliance with Nuvoton.

JCP is a frequency control product manufacturing company from which we purchase material and in which we have made an equity investment. We account for this investment using the equity method of accounting.

The table below set forth the net sales, purchases and expenses with our related parties for the three months ended March 31:


	Three Months Ended
	March 31,
	2023		2022
Keylink:
Net sales	$	3,407	$	5,766
Purchases	$	356	$	422
Plating, rental and consulting expense	$	4,425	$	4,547
Nuvoton:
Net sales	$	7	$	35
Purchases	$	2,978	$	3,066
JCP:
Purchases	$	99	$	213

The table below sets forth accounts receivable from, and accounts payable to, related parties:


	March 31, 2023		December 31, 2022
Keylink:
Accounts receivable	$	37,067	$	40,510
Accounts payable	$	33,921	$	33,733
Nuvoton:
Accounts receivable	$	4	$	30
Accounts payable	$	1,874	$	2,859
JCP:
Accounts payable	$	102	$	133