The group website lists Bintang Mas Shipping and Megastar Shipping as liner operators, Bintang Marine Services as stevedore and port agent, Winstar Shipping as tug and barge operator, Winstar Logistic as forwarder, and PT Wanamas Puspita for storage in Batam. Megastar was established in Singapore in 2000. Links also lead to Standard Shipping Agencies, but the connection is not explained.
Singapore, presumed.
Keep the explicit scope label independent; no alias or company identity is inferred.