H11 teeb lub teeb tuaj yeem siv ua lub teeb taws teeb thiab pos huab teeb.

Feem ntau ntawm h11 lub teeb daj yog tag nrho siv pos huab.

Vim tias h11 fog teeb lub teeb daj muaj zog nkag tau thaum huab cua tsis zoo.

Tag nrho peb cov h11 pos huab teeb daj yog tag nrho siv “anti-uv quartz iav”, uas tuaj yeem tiv thaiv uv ray tiv thaiv nws pib teeb.

Meanwhile, lub neej lub sij hawm ntawm peb h11 pos huab teeb daj yuav ntau tshaj 800-1200 teev.

Txhawm rau ua kom koj pom meej peb h11 pos huab teeb teeb daj, kuv yuav qhia koj cov duab hauv qab no.

Yog tias koj tuaj yeem muab peb lub h11 pos huab teeb daj lub caij nyoog, kuv paub tseeb tias koj tuaj yeem txuag tau ntau lub sijhawm thiab lub zog.