本廠地處中國寧波沿海經濟發達地區，地理位置優越，交通便捷，靠杭甬高速公路余姚道口。 　　我廠專業生產各種金屬口哨、塑料口哨、跳繩、健身器械等。產品質量高、品種多，深受消費者的信賴，本廠在1996年注冊商標《雷聲》，在文體行業有較高的知名度。 我廠擁有專業的設計師及雄厚的制作技術力量，擁有高科技的激光焊接技術,產品已達歐盟標準,同時承接客戶來樣、各種產品規格及各種大小訂單，保證產品質量，時間較快。 　　產品遠銷美國、日本、俄羅斯、歐盟、港澳臺地區等國家，本廠真誠邀請國內外朋友參觀洽談樹立良好的友誼和合作關系。 The LEISHENG whistle has been relied upon by top referees and officials for 20 years. The LEISHENG whistle is traditional and popular, which is ideal as a referees whistle, and it has a waterproof speed pea which works in any weather conditions. It's easy blow gives an instant response, perfect for petulant players, can also fits comfortably over wrist for work, exercise, sports and whistle is perfect for additional personal security.