Tunnel, under the bridge, shadow areas, etc. are not desirable 2) Dig out with 30∼32phi drill tip, in depth 60∼65mm vertically. 3) Keep clean the hole. 4) Check to meet tightly Miracle solar and the surface of road prior to putting in. 5) Put enough epoxy resin (adhesive bond) in the hole, then put Miracle Solar into hole.
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