Revenue - product sales and recycling services - Concentration of Revenue (Details) - Revenue Benchmark - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Customer A
Concentration Risk [Line Items]
Concentration risk, percentage	24.00%	10.30%
Customer B
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%	0.00%
Customer C
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	0.00%
Customer D
Concentration Risk [Line Items]
Concentration risk, percentage	5.00%	21.60%
Customer E
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	16.40%
Customer F
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	10.30%