<p>make sure it is qualified, it is necessary to learn some selection techniques, namely &quot;look, smell, touch three two&quot;. First of all, &quot;one look&quot; contains three aspects, one is to look at the product label, manufacturers address, contact information, whether to obtain the relevant certification. The two is to see if there were no impurities, facing the light, if there is not a uniform gray dust particles do not buy. Three is to look at the color, it is best to use transparent colorless plastic products. Because, coloring is bound to add some </p>
<p>additives, will reduce the safety of the product. For example, put the oil, vinegar and beverage in the color of the plastic bottle, dissolve part of masterbatch, eat unhealthy. Secondly, the smell of qualified plastic products can not smell any smell on the nose. If you open the lid to smell unpleasant taste, it is best not to buy. Finally, touch texture. Qualified plastic products surface should be smooth, there is a certain strength and flexibilityFeng bridge aluminum doors and windows, good insulation properties, strong </p>
<p>waterproof, has good fireproof effect diagram and anti noise, is a window by the majority of consumers, at present the Aluminum Alloy market a lot of fake dragons and fishes jumbled together, the house products, Xiaobian teach you how to distinguish between true and false Fenglv aluminum doors and windows. 1, the Aluminum Alloy Fenglv &quot;section will have brand printing, fake code is easy to erase, and genuine, even with some hard things are very difficult to remove code. 2, the real window is about </p>
<p>wood plastic deck cost<br />
how much will it cost to install 120 linear feet of composite fencing<br />
build bench composite decking</p>