Expert structural sealing via PU Injection Grouting by Shakura Construction & Engineering Pte. Ltd. We fix concrete leaks efficiently. Address: Blk 942 #04-453 Jurong West St. 91 Singapore 640942. Contact our team at +65 9647 2701 or email us: [email protected]. https://shakuraconstruction.sg/services/pu-injection-grouting/