This page applies to the following app, published under the developer name NKKTech Global by NKKTECH GLOBAL PTE. LTD. ("NKKTech", "we"):
null)com.nkktech.global.estInvoiceMobile)Email support@nkktech.com. Please include your device model, operating-system version, the app version and what you were doing when the problem happened. We usually reply within 2 business days.