>>>Link: Construction Process for Wood Keel Partition Wall Exterior First of all, judging from the appearance, the surface of the high-quality keel is smooth and smooth, with clear texture and smooth lines. The bad surface of the keel is rough with burrs, and the shades are uneven. Some of them may even be broken. Cross section Secondly, looking at the cross section of the ground keel, the purpose of looking at the cross section is to look at the rings of the wood. The more the annual rings, the longer the growth time of the wood. package Third, look at the outer packaging of the keel and related certificates. The packaging of the high-quality keel will clearly indicate the raw material specifications of the sheet, and at the same time, it will indicate the environmental protection level of the sheet. The interior should be E1, and the current E0 material also appears. . The poor quality of keel packaging is rough and some information is not clear. Be sure to buy it carefully when purchasing the keel. Purchase materials FLU A&B Antigen Detection Kit (Colloidal Gold Method) is an in vitro rapid qualitative test Detection of influenza A and B nucleoprotein antigens directly from the nose swabs and nasopharyngeal swab samples collected from patients with symptoms and signs of respiratory infection. It is designed to aid in the rapid identification of influenza A and B virus infections.
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Several points to pay attention to choose the keel