Black PVC composite air duct

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Product Description:

PVC002

Wire helix as framework,

single-ply aluminum foil core,

and black PVC jacket.


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Q:What is the whole heat exchange fresh air ventilator?
Depends on the main control panel is not cold and warm, single cold common motherboard. Only a generic motherboard can be changed. In the single cold air-conditioning on the outdoor machine to install the appropriate specifications of the four-way valve, adjust the amount of refrigerant to the appropriate level can be.
Q:Ventilation is very good, why still have to install fresh air system
You are a single raft toilet wipes Pie Tanzhuang open card would like to confirm what? Contract notarization or. The The If it is contract notarized, generally notary value of 0.25% -0.3%
Q:Air conditioning ventilation when the sound is a big reason
No matter, it is best to cut the distance between the material and the roof, like an arbor. Otherwise it is not foam board with it
Q:The installation method of ordinary air conditioner. The more detailed the better. Please thank you all
The basic operation of the same, but the different requirements of different professional, or to determine the direction of good, and then hands.
Q:HVAC Heating: What are the main components of the air distribution system?
(HS Code) Yes, the tax rebate is 13% (April . 2009 latest data). Floor of the board of the tax number is, the tax rebate is 9% (June . 2009 the latest data), floor board is the inspection of goods, exports need to be checked. There is nothing to understand where to add me MSN: kfwdz@hotmail.com
Q:Public building design, the building structure and water is generally designed by the Architectural Design Institute, air conditioning and ventilation is based on the design of the interior? Or first air conditioning ventilation?
Polystyrene should not be polycyclic aromatic. Polycyclic aromatic groups generally refer to aromatic groups when multiple benzene rings are used. Not all of the hydrocarbon chemical products are carcinogenic, and our bodies are producing hydrocarbon compounds all the time. Polystyrene carcinogenicity is small. General benzene ring on the more substituents, the toxicity is relatively small, such as toluene is less than the toxicity of benzene. Of course, there are many compounds with benzene ring, so there are a lot of scholars to study with our body creatures do not meet the quality of raw materials to do the polymer, such as lactic acid production of polylactic acid, but the current Can be put into use much.
Q:Air conditioning machine work when the sound is too much reason
This is based on the density of benzene board decision, not what you said, know it buddy.
Q:Air to water heater host and air conditioning host is not the same
This test with a small sample length 127mm, width 12.7mm, the maximum thickness of 3.2mm. In the absence of ventilation test chamber. The top of the specimen (6.4 mm place) is clamped with a clamp on the bracket and the longitudinal axis of the specimen is kept vertical. The lower end of the specimen is 9.5mm from the lamp tip and 305mm from the dry absorbent cotton surface. Bring the Bunsen burner and adjust it to produce a blue flame with a height of 19mm. Place the Bunsen Lights flame at the bottom of the sample for 10s, then remove the flame (at least 152mm away from the specimen) and write down the sample. Burning time. If the flame of the sample within 30s after removal of the flame is extinguished, the original lamp must be moved under the specimen again, re-ignite the sample for 10s, and then remove the Bunsen burner again and note the flame burning And flames burning the burning time. If the sample droplets drip, let it fall into the sample under the 305mm cotton, to see whether it ignited cotton. If the absorbent cotton is on fire, the rating should be taken into account. Specific grading indicators are as follows. Test Item 94V-094V-194V-21 Ten-time ignition Total flame burning time Maximum value (S) Individual flame burning time Maximum value (s) Flameless burning time (s) Yes Flame drop No No Allow only short time Burning general UL yellow card on the thickness of the test strip is divided into: 1/8 inch, 1/16 inch, 1/32 inch thickness, that is, 3.2mm, 1.6mm, 0.8mm three grades test.
Q:Do 3cm thick wall insulation how much kilogram of slurry and how many kilograms of polystyrene particles
You are talking about the construction measures it is not the house measures it, because the house has a construction of Huohuohuohuo number of leather and bronze sculpture drawings and specifications, high-rise building scaffolding should be lightning protection measures, that is, under the scaffolding around Reliable grounding (not less than four times, not less than 16 square copper core BV line), if it is pick plus, and the house can be connected to the pressure ring. Tower crane I will not say, upstairs has been said.
Q:Single cold air conditioning function can not change the cold and warm?
So good, then you recommend more. Give an address. You are not layman, too modest.

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