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Related Party Balances and Transactions (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Related Party Transactions [Abstract] |  |
Schedule of relationship with the group |
Name |  | Relationship with the Group
Ochem Chemical Co., Ltd (“Ochem”) |  | Controlled by CEO
Ochemate Material Technologies Co., Ltd (“Ochemate”) |  | Controlled by CEO
(1) Related party transaction |
Name |  | Relationship with the Group
Ochem Chemical Co., Ltd (“Ochem”) |  | Controlled by CEO
Ochemate Material Technologies Co., Ltd (“Ochemate”) |  | Controlled by CEO
(1) Related party transaction
Schedule of related party transactions |
|  | Three Months Ended March 31,
|  | 2021 |  | 2022
Raw material sold to Ochem |  | $ | 155 |  | $ | —
(2) Interest-free loans MPS received certain interest-free loans from related parties, Ochemate and Ochem, for the three months ended March 31, 2021 and 2022 with accumulative amounts of $1,874 and $0, respectively. The outstanding balance for the amount due from Ochem was $85 as of December 31, 2021 and $0 as of March 31, 2022, respectively. |
|  | Year Ended December 31,
|  | 2019 |  | 2020 |  | 2021
Raw material sold to Ochem |  | $ | — |  | $ | 167 |  | $ | 390
(2) Interest-free loans

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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