weifang hongyuan waterproof materials co.,ltd.

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weifang hongyuan waterproof materials co.,ltd.

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asphalt shingle
Specification: 2.8mm thick
Detail: A. Basic component: 1) Reinforcement: Mostly fiberglass; 2) Bitumen coating layers: Two layers of bitumen on two sides of the fiberglass mat, with modified bitumen as its main material, which obtains good performance to re...


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