1. Applied to open-in side hung window and sliding window.
2. Aluminum alloy cover proves the strength of the handle.
3. With cylinder for locking easily by key.
4. Can guarantee the unified surface finish, no chromatism.
5. Wide application, length of the exposed part of quadrate-tongue= 25, 30, 35, 40, 45.
6. Design Patent: the locator expands while screwing, which can avoid the loose of screws and improve the compliance with transmitter.
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