Profile
The profiles of the rolling door on the market are divided into aluminum-magnesium alloy and recycled aluminum. The high-quality rolling door profiles are made of aluminum-magnesium alloy, which has great advantages in toughness, while the lower quality profiles are recycled aluminum, and the toughness and service life are reduced.
Pulley
The rolling door is divided into upper and lower sets of pulleys. The good upper pulley structure is relatively complicated, with bearings inside, and aluminum blocks to fix the two wheels. The high-quality rolling door should have a certain weight when sliding, and there is no vibration when it is smooth.
Track
The rationality of the design of the ground rail directly affects the comfort and service life of the product. Consumers should choose a good foot feel when purchasing, and it is conducive to clean and hygienic style. At the same time, for the safety of the elderly and children at home, the height of the rail is not More than 5mm is good.

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