Quality and conformity inspection for Gongli roofing screws will be conducted during the production process. Workmanship, measurements, and safety inspection are essential checking parts in every production stage. An R&D lab has been established to carry out independent research on roofing building materials2.
The product is incredibly durable, requires minimal maintenance and can withstand the spills, accidents, and mishaps that often accompany day-to-day living. Gongli PVC roofing is developed to meet different requirements on color, size, light, etc3.
roofing screws is considered as the most promising roofing screw caps because of its shed roof ridge cap . Gongli PVC roofing has been certified under SGS, AL, and CNAS
Many manufacturers usually ignore the quality of some small accessories, but we always adhere to a rigorous attitude towards each product,
even if it is as small as a screw, a waterproof cover, which is our attitude in making products.
Our company is constituted by individuals with abundant know-how in the industry. They have the ability of continual innovation and R&D. This allows us to respond to our customers' needs in terms of bespoke and niche product ranges.2.
Our company has made great efforts for environmental protection. All of our production processes are strictly controlled and inspected to meet the relevant environmental regulations. Ask online!