Parryware Roca Pvt. Ltd. Supplies Large Bath Tub. Parryware Roca Pvt. Ltd. Has an ISO 9001:2000 certification. Large Bath Tub is available for self-supporting base for easy installation, includes shower area with raised, slip-resistant surface for extra safety and ideally suited for spa and whirlpool fittings. Large Bath Tub comes with variety of dimensions and designs.