[Tasks as Admin / Sales Admin] - Handle general admin and office support tasks, including document management, office supply ordering, reception/phone handling, and internal coordination. - Support smooth office operations through administrative procedures and data management. - Support the sales team with order processing, preparation of quotations/invoices, delivery schedule coordination, and sales data aggregation. - Manage customer and project information, and handle inquiries to improve sales operation efficiency. - Handle various coordination and communications with the headquarters and the Singapore office. - Manage invoice-related communications (including support for HQ-related and Singapore-related cases). - Coordinate service department members across TJapanese HQ and Singapore: Arrange member assignment and support from the Thailand office to those branches Consolidate requests from each cou...