Special keel is divided into PVC and Aluminum Alloy two materials, the main ingredient is PVC soft structure, soft buckle edge is made from PVC with some special additives.
专用龙骨分为PVC和铝合金两种材质，软膜的主要构造成份是PVC，软膜扣边也是由PV C以几种特殊添加剂制成。
Aluminum alloy frame cleaning should be treated with caution, generally use soft cloth, cleaning agent.
铝合金框架的清洁要格外小心对待，一般要用软布，清洁剂。
Huangxing alloy head repairing gun with soft package.
皇星铝合金头软包装堵缝枪。
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