塑料及其製品，橡膠及製成品, 39 Plastics and articles thereof, 39.17 -tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics:, 39.17.40 -tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics: --fittings, 業務, 業務

海關術語
塑料及其製品，橡膠及製成品
39 Plastics and articles thereof
39.17 -tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics:
39.17.40 -tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics: --fittings