【基本面信息】
　　·铜：产业层面，上周三大交易所库存减少1.6万吨，其中上期所库存减少1.5至6.4万吨，LME库存减少0.1至8.4万吨，COMEX库存微降至3.2万吨。上海保税区库存回升1.2万吨，上周国内进口窗口维持关闭，洋山铜溢价回落至偏低水平，进口清关需求不佳。
　　 ·铝：SMM统计国内电解铝社会库存48.2万吨，较上周四库存下降1.8万吨，较11月底库存下降3.4万吨，较去年同期库存下降42.9万吨。
　　 ·铁矿石：上周铁矿石基本面依旧偏弱，但较前几周已经有了边际好转的迹象，传统淡季港口库存没有出现明显累库，铁水产量有企稳的迹象。
　　

研究报告全文：金属期权周报期权研究2022年12月19日星期一基本面信息铜产业层面上周三大交易所库存减少16万吨其中上期所库存减少15至64万吨LME库存减少01至84万吨COMEX库存微降至32万吨上海保税区库存回升12万吨上周国内进口窗口维持关闭洋山铜溢价回落至偏低水平进口清关需求不佳铝SMM统计国内电解铝社会库存482万吨较上周四库存下降18万吨较11月底库存下降34万吨较去年同期库存下降429万吨铁矿石上周铁矿石基本面依旧偏弱但较前几周已经有了边际好转的迹象传统淡季港口库存没有出现明显累库铁水产量有企稳的迹象卢品先标的行情与期权分析投研经理沪铜多头趋势方向上高位逐渐下降回落跌破20天均线支撑点下有55天均线支撑沪铝延续近一0775-23375252周以来在20天均线和60天均线之间区间震荡沪锌高位盘整震荡一周后连续跳空低开大幅下跌跌破震荡区间下限形成上方有压力的弱势偏空头铁矿石延续一个半月以来的多头上涨趋势上周冲高回落而趋势线方向仍向lupxwkqhcn上黄金维持偏多头趋势方向上大幅波动下有60天均线支撑上有20天均线压力截止收盘沪铜周跌幅231报收从业资格号于65010沪铝周跌幅250报收于18685沪锌周跌幅304报收于23875沪金周跌幅010报收于40424铁矿石F3047321周涨幅148报收于80150交易咨询号上周有色金属铜期权和黄金期权日均成交量小幅减少而有色金属铝期权和锌期权日均成交量则大幅增加黑色铁矿石期权日均成交量大幅下降其中铜期权减少005万手至543万手沪铝期权增加118万手至Z0015541523万手沪锌期权增加118万手至435万手黄金期权增加004万手至173万手铁矿石期权大幅减少688万手至1772万手日均持仓量上周有色金属铜期权铝期权锌期权和黄金期权日均持仓量不同程度的增加而铁矿石期权日均持仓量则大幅度减少其中铜期权增加092万手至671万手铝期权增加100万手至785万手锌期权增加072万手至376万手黄金期权增加040万手至382万手铁矿石期权减少1115万手至2928万手期权持仓量PCR为100时一般认为是市场行情的多空分界线截止上周五收盘沪铜期权持仓量PCR小幅波动收于153沪铝期权持仓量PCR快速上涨报收于084沪锌期权持仓量PCR大幅上升报收于154黄金期权持仓量PCR小幅波动报收于055铁矿石期权持仓量PCR急速上涨报收于247隐含波动率上周有色金属铜期权锌期权和黄金期权隐含波动率小幅波动逐渐下行铝期权隐含波动率快速上升后急速下降而铁矿石期权隐含波动率小幅下降逐渐回落其中沪铜期权隐含波动率报收于1995沪铝期权隐含波动率收于1659沪锌期权隐含波动率收于2205沪金期权隐含波动率报收于1392铁矿石期权隐含波动率报收于3385结论与操作建议1沪铝期权沪铝维持近一周以来区间盘整震荡期权隐含波动率持续下降至较低水平期权持仓量PCR快速上涨操作建议构建卖出看涨看跌期权组合策略获取时间价值若市场行情快速大涨或大跌则平仓离场如AL2301SAL2301P1850010SAL2301P1860010和SAL2301C1870010SAL2301C18800102沪铜期权沪铜高位盘整震荡后逐渐下降回落形成短期趋势偏空中期趋势偏多头的市场行情格局期权隐含波动率持续下降持仓量PCR小幅波动维持较高水品操作建议构建卖出看涨看跌宽跨式期权组合策略获取时间价值收益若市场行情快速大跌或急速大涨则平仓逐渐离场如CU2301SCU2301P64000SCU2301P65000和SCU2301C65000SCU2301C660003沪锌期权沪锌高位回落后连续报收大阴线形成短期趋势上方有压力的弱势偏空头下方有55天均线支撑期权隐含波动率持续下降回落沪锌期权持仓量PCR大幅度上升维持高位水平操作建议构建卖出宽跨式期权偏空头组合策略获取时间价值收益和方向性收益若市场行情快速大涨或大跌则平仓离场如ZN2301SZN2301P23600SZN2301P23800和SZN2301C23800SZN2301C240004铁矿石期权铁矿石持续一个半月以来的多头上涨趋势上周加速上涨而后快速回落形成短期上方有压力中期趋势线方向向上的市场行情格局期权隐含波动率持续下降回落期权持仓量PCR急速上涨操作建议构建卖出偏多头的看涨看跌期权组合策略获取时间价值若市场行情快速大涨或大跌则平仓离场如I2305SI2301-C-810SI2305-C-820和SI2305-P-790SI2305-P-8005黄金期权黄金维持偏多头趋势方向上大幅波动的市场行情格局下方有60天均线支撑上方有前期高点压力期权隐含波动率小幅波动期权持仓量PCR窄幅盘整操作建议构建卖出偏多头的看涨看跌期权组合策略获取时间价值若市场行情快速大涨或大跌则平仓离场如AU2302SAU2302-C-40810SAU2302-C-41610和SAU2302-P-39610SAU2312-P-40010一周市场行情回顾期权品种标的合约收盘价涨跌涨跌幅周日均成交量万增减上周日均持仓量万增减CUCU230165010-211000-231735-1831304-167ALAL230118685-57500-2501758-6681401-867ZNZN230123875-109000-3041521022808-438AUAU230240424078-0101080-1811465-226II230580150-13001488964511978322149数据来源wind资讯五矿期货期权事业部期权总成交与持仓上周日均总成交量万张上周日均总持仓量万张期权品种CallPut合计变化PCRCallPut合计变化PCRCU228733145554328-4751382581641260670759169160AL270042525352258117610944357634969785469982080ZN193402420743547117661251519722389375867194147AU104586847173053580652303815187382253955066I70993106240177232-6875315092212200627292839-111464218数据来源wind资讯五矿期货期权事业部主力期货合成期权期权标的合约平值期权权利金C权利金P合成价格涨跌涨跌幅升贴水剩余天数到期日CU230165000830005680065262-71800-1092520062022-12-26AL230118700207001670018740-5900-031550062022-12-26ZN230123800478002080024070-48600-1981950062022-12-26AU2302408390896403-212-052-130242023-01-20I230580076005580820-750-0911870762023-04-12数据来源wind资讯五矿期货期权事业部注平值是以主力月合约call与put权利金相减最小为基准平值合成期权升贴水平值call权利金-pu权利金-标的价格主力期权合约隐含波动率期权标的合约IMP-CIMP-PIMP-T变化MA20UPLOWCU2301185820801995036209422381950AL2301157217581659-670167317291616ZN2301212822522205013221423062123AU2302147912791392019136914871250I2305298936683385080372340883358数据来源wind资讯五矿期货期权事业部主力期权合约持仓量PCR期权标的合约量-Call量-Put量-PCR变化持仓-Call持仓-Put持仓-PCR变化CU230117627283831610261898129057153005AL230124983217220870083050825585084003ZN230114218234011650231096316844154-004AU2302799961720770251849510211055-003I230517809405712280863856295197247020数据来源wind资讯五矿期货期权事业部标的价量关系图1铜主力合约走势图7500030成交量万收盘价7000025206500065260001560000105500055000002022-08-302022-10-142022-11-222022-06-152022-06-202022-06-232022-06-282022-07-012022-07-062022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-192022-10-242022-10-272022-11-012022-11-042022-11-092022-11-142022-11-172022-11-252022-11-302022-12-052022-12-082022-12-132022-12-16图2铝主力合约走势图2200050成交量万收盘价45401874000200003530252018000151051600002022-07-142022-10-192022-12-132022-06-152022-06-202022-06-232022-06-282022-07-012022-07-062022-07-112022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-08-302022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-242022-10-272022-11-012022-11-042022-11-092022-11-142022-11-172022-11-222022-11-252022-11-302022-12-052022-12-082022-12-16图3锌主力合约走势图2600060成交量万收盘价2409000250005024000402300030220002021000102000002022-06-202022-06-152022-06-232022-06-282022-07-012022-07-062022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-08-302022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-192022-10-242022-10-272022-11-012022-11-042022-11-092022-11-142022-11-172022-11-222022-11-252022-11-302022-12-052022-12-082022-12-132022-12-16标的价量关系图4黄金主力合约走势图43018成交量万收盘价1642040290144101240010390863804370236002022-07-062022-08-252022-12-082022-06-152022-06-202022-06-232022-06-282022-07-012022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-302022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-192022-10-242022-10-272022-11-012022-11-042022-11-092022-11-142022-11-172022-11-222022-11-252022-11-302022-12-052022-12-132022-12-16图5铁矿石主力合约走势图900140成交量万收盘价838008501201008008075060700406502060002022-06-202022-08-302022-11-172022-06-152022-06-232022-06-282022-07-012022-07-062022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-192022-10-242022-10-272022-11-012022-11-042022-11-092022-11-142022-11-222022-11-252022-11-302022-12-052022-12-082022-12-132022-12-16铜期权持仓分布铜期权持仓分布图铜期权持仓变化图45004000400035003500300030002500250020002000150015001000100050050000-50058000580006000048000480005000052000540005600058000600006200064000660006800070000720007400076000780004800050000520005400056000620006400066000680007000072000740007600078000OIPOICOICHANGEPOICHANGEC铜期权最大未平仓铜认购认沽合约最大持仓量所在的行权价7500070000650006000055000500002022-10-272022-11-042022-11-142022-06-152022-06-202022-06-232022-06-282022-07-012022-07-062022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-08-302022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-192022-10-242022-11-012022-11-092022-11-172022-11-222022-11-252022-11-302022-12-052022-12-082022-12-132022-12-16铜期权到期日收盘价C最大持仓P最大持仓铜期权持仓量PCR铜期权隐含波动率29075000OIPCR50CLOSE4524070000403519065000302565260001406000020150905500010040500002022-06-152022-08-222022-06-232022-07-012022-07-112022-07-192022-07-272022-08-042022-08-122022-08-302022-09-072022-09-162022-09-262022-10-112022-10-192022-10-272022-11-042022-11-142022-11-222022-11-302022-12-082022-12-162022-12-082022-06-272022-07-072022-07-192022-07-292022-08-102022-08-222022-09-012022-09-142022-09-262022-10-132022-10-252022-11-042022-11-162022-11-282022-06-15IMPVMA20UPLOW铝期权持仓分布铝期权持仓分布图铝期权持仓变化图600010008005000600400400020003000-200-4002000-6001000-800-1000-120015100151001540015700160001630016600169001720017500178001810018400187001900019300196001990020400210002160022200014800148001480015200156001600016400168001720017600180001840018800192001960020000208002160022400OIPOICOICHANGEPOICHANGEC铝期权最大未平仓铝认购认沽合约最大持仓量所在的行权价220002100020000190001800017000160002022-09-162022-10-142022-11-042022-11-252022-12-162022-06-152022-06-202022-06-232022-06-282022-07-012022-07-062022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-08-302022-09-022022-09-072022-09-132022-09-212022-09-262022-09-292022-10-112022-10-192022-10-242022-10-272022-11-012022-11-092022-11-142022-11-172022-11-222022-11-302022-12-052022-12-082022-12-13铝期权到期日收盘价C最大持仓P最大持仓铝期权持仓量PCR铝期权隐含波动率160OIPCR2200035CLOSE30130200002510020180001507010040160002022-06-152022-06-232022-07-012022-07-112022-07-192022-07-272022-08-042022-08-122022-08-222022-08-302022-09-072022-09-162022-09-262022-10-112022-10-192022-10-272022-11-042022-11-142022-11-222022-11-302022-12-082022-12-162022-06-272022-07-072022-07-192022-07-292022-08-102022-08-222022-09-012022-09-142022-09-262022-10-132022-10-252022-11-042022-11-162022-11-282022-12-082022-06-15IMPVMA20UPLOW锌期权持仓分布锌期权持仓分布图锌期权持仓变化图35004003000200250002000-2001500-4001000500-6000-800176001760020400184002280018000180001840018800192001960020000208002120021600220002240022800232002360024000244002480025500265002750028500176001800018800192001960020000204002080021200216002200022400232002360024000244002480025500265002750028500OIPOICOICHANGEPOICHANGEC锌期权最大未平仓锌认购认沽合约最大持仓量所在的行权价2800026000240002200020000180002022-10-272022-11-042022-11-142022-06-152022-06-202022-06-232022-06-282022-07-012022-07-062022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-08-302022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-192022-10-242022-11-012022-11-092022-11-172022-11-222022-11-252022-11-302022-12-052022-12-082022-12-132022-12-16锌期权到期日收盘价C最大持仓P最大持仓锌期权持仓量PCR锌期权隐含波动率20030000OIPCR50180CLOSE2800016040140260003012010024000200802200010060040200002022-06-152022-06-232022-07-012022-07-112022-07-192022-07-272022-08-042022-08-122022-08-222022-08-302022-09-072022-09-162022-09-262022-10-112022-10-192022-10-272022-11-042022-11-142022-11-222022-11-302022-12-082022-12-162022-12-082022-06-272022-07-072022-07-192022-07-292022-08-102022-08-222022-09-012022-09-142022-09-262022-10-132022-10-252022-11-042022-11-162022-11-282022-06-15IMPVMA20UPLOW黄金期权持仓分布黄金期权持仓分布图黄金期权持仓变化图30004003502500300250200020015001501001000500500-500-100360360320320328336344352360368376384392400416432448464320328336344352368376384392400416432448464OIPOICOICHANGEPOICHANGEC黄金期权最大未平仓黄金认购认沽合约最大持仓量所在的行权价4804604404204003803603403203002022-08-042022-08-122022-06-152022-06-202022-06-232022-06-282022-07-012022-07-062022-07-112022-07-142022-07-192022-07-222022-07-272022-08-012022-08-092022-08-172022-08-222022-08-252022-08-302022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-192022-10-242022-10-272022-11-012022-11-042022-11-092022-11-142022-11-172022-11-222022-11-252022-11-302022-12-052022-12-082022-12-132022-12-16黄金期权到期日收盘价C最大持仓P最大持仓黄金期权持仓量PCR黄金期权隐含波动率110420OIPCR35100CLOSE4103040290090400250803902007038015060370100503602022-06-152022-06-232022-07-012022-07-112022-07-192022-07-272022-08-042022-08-122022-08-222022-08-302022-09-072022-09-162022-09-262022-10-112022-10-192022-10-272022-11-042022-11-142022-11-222022-11-302022-12-082022-12-162022-09-262022-06-272022-07-072022-07-192022-07-292022-08-102022-08-222022-09-012022-09-142022-10-132022-10-252022-11-042022-11-162022-11-282022-12-082022-06-15IMPVMA20UPLOW铁矿石期权持仓分布铁矿石期权持仓分布图铁矿石期权持仓变化图1800025001600020001400015001200010000100080005006000040002000-5000-100053053068092098047047050056059062065071074077080083086089092095098010204705005305605906206506807107407708008308608909501020OIPOICOICHANGEPOICHANGEC铁矿石期权最大未平仓铁矿石认购认沽合约最大持仓量所在的行权价120010008006004002022-07-112022-07-142022-06-152022-06-202022-06-232022-06-282022-07-012022-07-062022-07-192022-07-222022-07-272022-08-012022-08-042022-08-092022-08-122022-08-172022-08-222022-08-252022-08-302022-09-022022-09-072022-09-132022-09-162022-09-212022-09-262022-09-292022-10-112022-10-142022-10-192022-10-242022-10-272022-11-012022-11-042022-11-092022-11-142022-11-172022-11-222022-11-252022-11-302022-12-052022-12-082022-12-132022-12-16铁矿石期权到期日收盘价C最大持仓P最大持仓铁矿石期权持仓量PCR铁矿石期权隐含波动率30083800900OIPCR80CLOSE25085070200800601507505010070040050650300006002022-07-192022-09-162022-06-152022-06-232022-07-012022-07-112022-07-272022-08-042022-08-122022-08-222022-08-302022-09-072022-09-262022-10-112022-10-192022-10-272022-11-042022-11-142022-11-222022-11-302022-12-082022-12-162022-12-082022-06-272022-07-072022-07-192022-07-292022-08-102022-08-222022-09-012022-09-142022-09-262022-10-132022-10-252022-11-042022-11-162022-11-282022-06-15IMPVMA20UPLOW策略应用和分析沪铝日行情K线图沪铝期权投资策略和到期损益图沪铝维持近一周以来区间盘整震荡期权隐含波动率持续下降至较低水平期权持仓量PCR快速上涨操作建议构建卖出看涨看跌期权组合策略获取时间价值若市场行情快速大涨或大跌则平仓离场如AL2301SAL2301P1850010SAL2301P1860010和SAL2301C1870010SAL2301C1880010策略到期损益图如下策略应用和分析沪铜日行情K线图沪铜期权投资策略和到期损益图沪铜高位盘整震荡后逐渐下降回落形成短期趋势偏空中期趋势偏多头的市场行情格局期权隐含波动率持续下降持仓量PCR小幅波动维持较高水品操作建议构建卖出看涨看跌宽跨式期权组合策略获取时间价值收益若市场行情快速大跌或急速大涨则平仓逐渐离场如CU2301SCU2301P64000SCU2301P65000和SCU2301C65000SCU2301C66000策略到期损益图如下策略应用和分析锌日行情K线图锌期权投资策略和到期损益图沪锌高位回落后连续报收大阴线形成短期趋势上方有压力的弱势偏空头下方有55天均线支撑期权隐含波动率持续下降回落沪锌期权持仓量PCR大幅度上升维持高位水平操作建议构建卖出宽跨式期权偏空头组合策略获取时间价值收益和方向性收益若市场行情快速大涨或大跌则平仓离场如ZN2301SZN2301P23600SZN2301P23800和SZN2301C23800SZN2301C24000策略到期损益图如下策略应用和分析铁矿石日行情K线图铁矿石期权投资策略和到期损益图铁矿石持续一个半月以来的多头上涨趋势上周加速上涨而后快速回落形成短期上方有压力中期趋势线方向向上的市场行情格局期权隐含波动率持续下降回落期权持仓量PCR急速上涨操作建议构建卖出偏多头的看涨看跌期权组合策略获取时间价值若市场行情快速大涨或大跌则平仓离场如I2305SI2305-C-810SI2305-C-820和SI2305-P-790SI2305-P-800策略到期损益图如下策略应用和分析沪金日行情K线图黄金期权投资策略和到期损益图黄金维持偏多头趋势方向上大幅波动的市场行情格局下方有60天均线支撑上方有前期高点压力期权隐含波动率小幅波动期权持仓量PCR窄幅盘整操作建议构建卖出偏多头的看涨看跌期权组合策略获取时间价值若市场行情快速大涨或大跌则平仓离场如AU2302SAU2302-C-40810SAU2302-C-41610和SAU2302-P-39610SAU2312-P-40010策略到期损益图如下免责声明五矿期货有限公司是经中国证监会批准设立的期货经营机构已具备有商品期货经纪金融期货经纪资产管理期货交易咨询等业务资格本刊所有信息均建立在可靠的资料来源基础上我们力求能为您提供精确的数据客观的分析和全面的观点但我们必须声明对所有信息可能导致的任何损失概不负责本报告并不提供量身定制的交易建议报告的撰写并未虑及读者的具体财务状况及目标五矿期货研究团队建议交易者应独立评估特定的交易和战略并鼓励交易者征求专业财务顾问的意见具体的交易或战略是否恰当取决于交易者自身的状况和目标文中所提及的任何观点都仅供参考不构成买卖建议版权声明本报告版权为五矿期货有限公司所有本刊所含文字数据和图表未经五矿期货有限公司书面许可任何人不得以电子机械影印录音或其它任何形式复制传播或存储于任何检索系统不经许可复制本刊任何内容皆属违反版权法行为可能将受到法律起诉并承担与之相关的所有损失赔偿和法律费用五矿期货分支机构深圳总部业务一部深圳市南山区滨海大道3165号五矿金融大厦13-16层电话400-888-5398电话0755-83252740业务二部业务三部电话0755-88917165电话0755-83752356业务四部业务五部电话010-68331868-183电话028-85053476深圳营业部北京分公司深圳市福田区福华三路1006号诺德大厦30D1北京市海淀区首体南路6号新世纪世行饭店写字楼1253室电话0755-83752310电话010-68332068上海分公司成都分公司上海市浦东新区向城路288号国华人寿金融大厦902903成都高新区天府大道北段1288号1幢3单元12层12041205电话021-58784529电话028-86131072青岛分公司北京营业部山东省青岛市东海西路35号太平洋中心1写字楼409北京市丰台区广安路9号院6号楼408409电话0532-85780820电话010-64185322广州营业部湛江营业部广东省广州市天河区珠江西路17号广晟国际大厦24楼2407广东省湛江市开发区乐山东路35号银隆广场12层A1210室电话020-29117582电话0759-2856220天津营业部西安营业部天津市滨海高新区华苑产业区梅苑路5号金座广场2101-陕西省西安市新城区纬什街新科路1号楼一层2102电话029-87572985电话022-23778878宁波中山西路营业部重庆营业部浙江省宁波市海曙区布政巷16号12楼1205室重庆市江北区江北城西大街25号11-1电话0574-87330527电话023-67078086郑州营业部南通营业部郑州市未来路69号未来大厦16层1612号江苏省南通市青年东路81号南通大饭店B楼财富中心2003室电话0371-65619030电话0513-81026105杭州民心路营业部台州爱华路营业部浙江省杭州市江干区万银大厦1408室浙江省台州市椒江区爱华新台州大厦8-A电话0571-81969926电话0576-89811511济南营业部昆明营业部山东省济南市历下区山大路201号天业科技商务大厦401云南省昆明市盘龙区北京路612号银海国际公寓D座3201室427室电话0871-63338532电话0531-83192255大连营业部唐山营业部辽宁省大连市沙河口区会展路大连国际金融中心A座大连期河北省唐山市路北区军鑫里凤城国贸1楼21层2104号货大厦2001号电话0315-5936395电话0411-84800452武汉营业部湖北省武汉市江岸区三阳路8号天悦星辰A栋26楼2602室电话0755-23375007