Perth Intelligent door Co ., Ltd. Guangdong Perth Intelligent door Co., Ltd. is the subsidiary company of Taiwan Dongrong Co., Ltd . Perth was established in 1998, and the company has the core independent brand of "Dongrong", and professionally manufactures, develops, sells intelligent battery rolling door operators , fire protection rolling door operators, Australia door operators, telescoping door operators , garage openers, sliding door operators, barrier gate, remote controllers and related assorted industries. Our company has introduced advanced electric control technology from USA and Japan , etc. The electric motorized product integrates many functions including electric drive, remote control, or manual control. All along we have been listening and responding to our customers requirements and we always delight our customers by the following terms: Stable Quality Easy Installation and Maintain Delivery on Time Battle Price We also recognize that people buying door operator wish to make an informed purchasing decision. Perth therefore offers comprehensive online product information and inspire people who have an interest in door operator. Our friendly and experienced staff are also available to answer any question you might have either by email or by telephone . We hope you enjoy our online catalogue experience.