# Tronvik > Tronvik Studio AB provides outside-in compliance and Quality of Earnings (QoE) due diligence for e-commerce M&A transactions. Tronvik isolates systemic regulatory liabilities — EU GPSR violations, Omnibus Directive and DSA dark-pattern revenue, EPR non-compliance — from publicly available data, before the data room opens. Serving European and global PE buyout funds and active dealmakers. Delivering a 5×5 Compliance Risk vs. Financial Impact Matrix within 7 business days of target deployment. ## Service - [E-commerce M&A Due Diligence](https://tronvik.com/): Outside-in compliance analysis covering GP1 product margin security (GPSR, CE marking, third-country sourcing), GP2 logistics margin security (EPR, packaging tax), and GP3 contribution margin security (Omnibus, DSA, dark patterns, CAC normalisation). ## Contact & Engagement Tronvik does not accept target information via web forms or scripts. Engage via: - Email: info@tronvik.com (corporate email preferred) - Protocol: Fund identity → Conflict clearance → Master MNDA → Secure channel → 7-day report ## Full Context - [Complete context file](https://tronvik.com/llms-full.txt): Full text content of all Tronvik service documentation including the Compliance Cascading Margin Degradation Model and Engagement Protocol.