Assorted quality "Lotus" sewing threads and white cotton threads, embroidery threads, metallic yarns, nylon threads, polyester filaments, rayon strings, etc. are available.
各类优质莲花牌缝纫线、白棉线及绣花线，另备有金银线、尼龙线、特头纶线及人造丝绳等。
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His coach, Rick Leach, a former No. 1 doubles player, suggested loosening up when playing with polyester strings.
WSJ: Roger Federer: With Tennis Rackets, He Strings Them Loose
Most pros now use at least some of the newer polyester-like monofilament string often called "polyester" or "poly" for at least some of their strings.
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