Metal elements, symbols TI, white, soft. Its compounds are toxic. English name: Thallium, derived from thallqs, meaning buds - because of its bright yellow line in the spectrum with a new green color, discovered in 1861. Its main purpose is to create a potent thallium sulfate ── rodenticides. It is an odorless and odorless metal. Its salt and starch, sugar, glycerin and water can produce a rodenticide for "hospital" mice. Useful in fighting plague. The chemical symbol is derived from the tender green color of its spectral line, which is based on the Greek word "thallos", meaning "green shoots." In 1861, the British chemical and physicist Sir William Crookes discovered this element in the spectrum of the sulfuric acid plant waste residue and named it; the next year, Crookes and Lamy used electrolysis almost simultaneously. The legal system is successful. The content of strontium in the earth's crust is about three hundred thousandths. It is distributed in feldspar , mica and iron or copper sulphide ore in low concentration, and there are few independent antimony ore.
Material Selection:
1. Frame: 2MM thicknesses cold-roll Stainless steel.
2. Motor: Germany SEW brake motor (outer), power 0.75KW, power supply 220V.
3. Control system: Imported Japan Mitsubishi converter and PLC to control of electric box (150%1HZ)
4. Opening & closing speed: 0.6-1.5m/s (adjustable).
5. Safety Device: Korea Photocell Sensor, emergency stopping reaction when sensing obstacles.
6. Curtain: France high-density polyester fiber and the surface coating processing, thickness 0.8MM, variety colors can be chose: Red, yellow, blue, green, orange, gray, white, transparent, etc. Tensile strength: 4000/3500N/5cm, tear strength 600/600N. Fire-proofing level: German standard DIN75200 Usage temperature: -30 ° C +70 ° C.
7. Wind resistant: The Aluminium alloy Reinforce Girder to increase wind resistant effect.
8. Curtain replacement function: Aluminium alloy Reinforce Girder is loaded between 2 pieces Curtain, can be replaced easily if any curtain broken, save your cost.
9. Transparent window: 1.2MM thickness transparent PVC window, size and location is up to your request, more safer.
10. Seal: Seal brush are Installed inside the guides, and the special bottom design, to fit any uneven ground.
11. Cotrolling way: Push button + radar sensor, very convenient.
12. Limiting Switch: Mechanical limiting switch, easily and exactly.
13. Emergency STOP: With emergency stop button on control panel, can stop easily by
Hand once disconnect or accident
14 Fault recovery function: All Hongfa's production is with fault recovery function, system will self-recovery after power cut off.
15. Delivery time: About 7 business days with contract and deposit confirmed.
16. Pyament item: 50% before production, and the other 50% before shipment.
17. Warranty Details: We provide 12 months warranty for all doors and accessories (except man-made disasters, Irresistible natural disasters, ect^).
We have many professional engineers with rich experience, qualified products, perfect service system, and good cooperation relationship with many famous companies.
PVC high speed door, plastic roll up doors, high speed fabric roll up doors, high speed rolling doors, pvc roll up doors SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfafrud.com