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 and our Chairman and CEO serves as a member of the Nuvoton board of directors. We purchase wafers from Nuvoton for use in our production process and consider our relationships Nuvoton to be mutually beneficial. We plan to continue our strategic alliance with Nuvoton. We have an agreement to purchase approximately $47.0 million of wafers from Nuvoton that ends in the fourth quarter of 2025.

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

In addition, Chengdu Ya Guang Electronic Company Limited (“Ya Guang”) is our 2% joint venture partner in one of our Chengdu assembly and test facilities and our 5% partner in our other Chengdu assembly and test facilities; however, we have no material transactions with Ya Guang, other than this joint venture.


	2021		2020		2019
Keylink
Net sales	$	19,689	$	19,757	$	15,543
Purchases	$	2,015	$	1,538	$	2,399
Plating, rental and consulting expense	$	17,922	$	14,647	$	15,316
Nuvoton
Net sales	$	65	$	10	$	-
Purchases	$	9,764	$	8,418	$	7,719
JCP
Purchases	$	1,240	$	1,095	$	625
LSC, its subsidiaries and affiliates
Net sales	$	-	$	518	$	912
Purchases	$	-	$	12,062	$	13,799

The table below sets forth accounts receivable from and accounts payable to related parties at December 31:


	2021		2020
Keylink
Accounts receivable	$	39,530	$	35,365
Accounts payable	$	36,090	$	31,247
Nuvoton
Accounts receivable	$	-	$	10
Accounts payable	$	2,014	$	796
JCP
Accounts payable	$	235	$	357

Prior November 30, 2020, LSC was our largest stockholder and a related party. As of November 30, 2020, we acquired LSC and they are no longer a stockholder or related party. See Note 19 for additional information related to the acquisition of LSC.