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orchidsperuflora.com • View topic - trace amounts of arsenic, there is a certain toxicity

trace amounts of arsenic, there is a certain toxicity

Help to use this forum on different languages.

Postby qizhenapp » Mon Nov 06, 2017 11:29 am

<p>different tree species characteristics and the application of the situation there is a big difference. Here look at the market three kinds of main anti-corrosion wood species. 4, wood species on the impact of environmental protection of wood preservative material itself decided to the amount of drug requirements, the decision to protect the environmental protection of wood, so the wood should also be carefully </p>
<p>selected wood. For example, the Nordic wood produced in the cold area, compact structure, similar to hardwood, so the heartwood part of the large and has a natural anti-corrosion, antiseptic wood than the other fast-growing wood less, but the use of good performance, suitable for civilian use. And some tree species grow faster, heartwood and natural resistance is poor, the drug requirements of the larger, </p>
<p>high chemical composition, poor environmental protection. Part2: anti-corrosion wood purchase Weapon With the market demand for the increase in anti-corrosion wood, a variety of anti-corrosion wood manufacturers, dealers have emerged, many of them do not keep credibility, not for quality, mercenary. Therefore, if consumers do not polish his eyes, it is easy to buy to the anti-corrosion performance is not </p>
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