REVENUE FROM CONTRACTS WITH CUSTOMERS

3 Months Ended

Mar. 31, 2023

Revenue from Contract with Customer [Abstract]

REVENUE FROM CONTRACTS WITH CUSTOMERS

REVENUE FROM CONTRACTS WITH CUSTOMERS

The Company assesses revenues based upon the nature or type of goods or services it provides and the geographic location of the related businesses. The following tables present disaggregated revenue information:

	Three Months Ended March 31,
	2023		2022
Single wafer cleaning, Tahoe and semi-critical cleaning equipment	$	36,614	$	26,033
ECP (front-end and packaging), furnace and other technologies	26,598		12,248
Advanced packaging (excluding ECP), services & spares	11,044		3,905
Total Revenue By Product Category	$	74,256	$	42,186
Wet-cleaning and other front-end processing tools	$	56,382	$	31,702
Advanced packaging, other processing tools, services and spares	17,874		10,484
Total Revenue Front-end and Back-End	$	74,256	$	42,186

	Three Months Ended March 31,
	2023		2022
Mainland China	$	72,458	$	42,130
Other Regions	1,798		56
	$	74,256	$	42,186

Below are the accounts receivables and contract liabilities balances as of:

	March 31, 2023		December 31, 2022
Accounts receivable	$	186,130	$	182,936
Advances from customers	180,453		153,773
Deferred revenue	4,400		4,174

During the three months ended March 31, 2023, advances from customers increased by $26.7 million, due to an increase of payments made by customers for first tools under evaluation, and an increase in customer pre-payments for tools prior to delivery.