Six tips:
First, choose brand products with high reputation, good reputation, high security, and international quality system certification.
Second, waterproof parts should be comprehensive, the basement floor and all walls should be waterproof, moisture-proof treatment.
Third, the thickness of the waterproof layer should be enough.
Fourth, the construction process should be meticulous: wall surface and ground joints, Yin Yang angle, water pipes, floor drains and sanitary ware around and laid cold and heat pipes within the gutter is the key waterproof parts.
5. Closed water test after completion: After the construction is completed, close the door and the water outlet, and store water in the room for 24 hours to check for leaks.
6. Remedy the leakage if found.
Nine details:
1. The ceiling should choose waterproof, anti-corrosion, rust-proof materials.
2. Floor: Be sure to do waterproofing before laying the floor tiles; make sure that there is a drain slope (usually about 1%) on the brick surface, and the slope is facing the floor drain; after closing the floor, you must do a water-removal test for at least 24 hours; pay attention when laying the floor tiles Interspersed and aligned with the wall tiles to ensure the overall feeling.
3. Wall: Wall tiles should also be well-waterproofed. When tiling, they should be flat and aligned with the floor tiles. When encountering the outlet of water supply pipes, the cut of the tiles should be small to ensure perfect appearance.
4. Door: The door sector should be slightly higher than the inner side of the bathroom; the gap with the ground should be large to facilitate the return air; if it is a sliding door, a waterproof layer should be provided between the door and the floor tile.
5. Circuit laying: Waterproof tapes and insulating tapes must be wrapped around the joints of wires; the wires must be covered with flame-retardant tubes; all switches and sockets must have moisture-proof boxes.
6. Waterway reconstruction: It is best not to change the water supply and drainage circuit.
7. Sanitary ware installation: It is best to put a good amount of water in the hole before the decoration, and select the sanitary ware according to the size; toilets should be sealed with toilet mud first, and then fixed with expansion screws or glass glue to facilitate the repair when the blockage occurs.
8. Ventilation: Ventilation fans must have retrograde gates to prevent backflow of dirty air.
9. Greening: Choose shade-tolerant, hi-potted pots to add anger.

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Our company can produce many kinds of flat convex Spherical Mirrors with different sizes, radii and base materials, flat convex spherical Mirrors, flat concave spherical mirrors, double convex spherical mirrors, double concave spherical mirrors, meniscus spherical mirrors and other ordinary spherical mirrors. Special spherical mirror can also be processed, such as: achromatic spherical mirror, aspheric surface and spherical mirror group.
Materials: optical glasses such as flint glass, ultraviolet fused quartz and infrared fused quartz, as well as optical crystal materials such as calcium fluoride (CaF2), germanium (Ge), Zinc selenide (ZnSe) and silicon (Si)
Focal length: ±5mm -- ±1000mm±1%
(Germany TIROPTICS OPTOMATIC2000 test)
Outer circle: 4mm -- 200mm±0.1mm
Center thickness tolerance: ±0.1mm
Center deviation: 3-5 points
Surface accuracy: /2@
Surface quality: 40/20
Effective diameter: 90%
Plating film: according to customer requirements can be coated
In addition, we have more than a thousand kinds of standard products, and some of the standard products in stock to meet your needs
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Gold Dragon Optics Electronic Technology CO.,Ltd ,