两个铅锡合金扣口音的门襟。
间接原材料包括铝合金龙骨或PVC龙骨、扣边条、固定件、粘结剂等，相对直接原材料费用稍低。
Indirect materials including Aluminum Alloy keel or PVC keel, buckle strips, fasteners, adhesives, the relative direct cost of raw materials is slightly lower.
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。
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.
宁波海林塑料五金有限公司是一家专业生产各种系列铝登山扣及铝合金产品的企业。
Is a company specializing in the production of various series of aluminum and aluminum alloy products Carabiner enterprises.
能生产各种不锈钢、铜、铁、合金等材料的圆形扣、鸡眼、撞钉．钮底、平珠和钮扣配套的辅料产品。
We can produce all kind of button like circular button, corn, bump nail, metal pearl, button bottom with the material of iron, copper, stainless steel, alloy.
本产品由海绵、复合网布、铝合金肋骨、扣带等组成。
This product by the sponge, compound nettings, the aluminum alloy rib, the buckle and so on is composed.
本产品由海绵、复合网布、铝合金肋骨、扣带等组成。
This product by the sponge, compound nettings, the aluminum alloy rib, the buckle and so on is composed.
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