<h1>Manufacturer launches ISO 9001 and ISI-certified uPVC doors and windows line; ensure compliance, truthful claims, clear warranty and liability terms</h1> A regional manufacturing firm previously focused on HDPE pipes and water tanks has launched a uPVC doors-and-windows product line, touting ISO 9001 and ISI certification, UV-stabilised multi-chamber frames, noise- and weather-resistance, and integrated supply advantages for builders. Legal considerations include verifying regulatory and building-code compliance of claimed performance metrics, the accuracy of marketing and technical claims to avoid consumer-protection or misrepresentation exposure, scope and enforceability of warranties and after-sales obligations, allocation of installation and defect liabilities in supply contracts, and risk management for expansion of product and distribution channels.